School Idol Skills

School Idol Skills can be obtained from the Live Reward Boxes and equipped to your cards to strengthen them.

Skills have different effects and some have specific equip conditions; everything is listed here.

One School Idol Skill can only be equipped onto one card at once, and one card cannot have the same School Idol Skill equipped twice.

To equip a School Idol Skill, view the card you wish to equip a Skill to. Then, tap on its open slots. You'll be presented with the list of School Idol Skills you have. Simply select which you want to want to equip and press OK.

You can also equip Skills from the Unit Formation menu by using the button highlighted below. (The upper window will also tell you how many points you get from your Center Skill.)

To remove a School Idol Skill, view the card you wish to remove a Skill from. Tap on its Skills and select which one you want to remove - it will be highlighted in pink. Then, press the button at the top of the window. The Skill will go back in your inventory for you to equip it on another card.

To sell a School Idol Skill, browse to the menu where you'll be greeted by your Skill inventory. From here, select one that isn't equipped then press the button. Use the + and - buttons to choose how many Skills of the type you selected you want to sell, and press the button again to sell them.

To equip School Idol Skills to a card, the card needs to have free School Idol Skill Slots. Each Skill fills a certain number of slots, and each card can have only a limited number of slots depending on their rarity. Here's a table with the base amount of skills for every rarity.

When you idolize a card using another copy, the card will gain 1 slot. First idolizing a card with seals will not give a slot. Extra slots on idolized cards are then unlocked by using seals or another copy of the card to "re-idolize" your card: using another copy will open 2 slots, while using seals will give you 1.

Skills on a pink background are skills that can only be obtained from Special Reward Boxes (egg).

Smile Kiss	Pure Kiss	Cool Kiss
requires 1 slot	requires 1 slot	requires 1 slot
selling price: 7900 G	selling price: 7900 G	selling price: 7900 G
Increases the card's Smile stat by 200	Increases the card's Pure stat by 200	Increases the card's Cool stat by 200
Smile Perfume	Pure Perfume	Cool Perfume
requires 2 slots	requires 2 slots	requires 2 slots
selling price: 17000 G	selling price: 17000 G	selling price: 17000 G
Increases the card's Smile stat by 450	Increases the card's Pure stat by 450	Increases the card's Cool stat by 450
Smile Ring [1st years]	Pure Ring [1st years]	Cool Ring [1st years]
requires 2 slots	requires 2 slots	requires 2 slots
selling price: 17000 G	selling price: 17000 G	selling price: 17000 G
Increases the card's Smile stat by 10% can only be equipped on 1st years members cards (Rin, Maki, Hanayo, Yoshiko, Ruby, Hanamaru)	Increases the card's Pure stat by 10% can only be equipped on 1st years members cards (Rin, Maki, Hanayo, Yoshiko, Ruby, Hanamaru)	Increases the card's Cool stat by 10% can only be equipped on 1st years members cards (Rin, Maki, Hanayo, Yoshiko, Ruby, Hanamaru)
Smile Ring [2nd years]	Pure Ring [2nd years]	Cool Ring [2nd years]
requires 2 slots	requires 2 slots	requires 2 slots
selling price: 17000 G	selling price: 17000 G	selling price: 17000 G
Increases the card's Smile stat by 10% can only be equipped on 2nd years members cards (Honoka, Kotori, Umi, Chika, Riko, You)	Increases the card's Pure stat by 10% can only be equipped on 2nd years members cards (Honoka, Kotori, Umi, Chika, Riko, You)	Increases the card's Cool stat by 10% can only be equipped on 2nd years members cards (Honoka, Kotori, Umi, Chika, Riko, You)
Smile Ring [3rd years]	Pure Ring [3rd years]	Cool Ring [3rd years]
requires 2 slots	requires 2 slots	requires 2 slots
selling price: 17000 G	selling price: 17000 G	selling price: 17000 G
Increases the card's Smile stat by 10% can only be equipped on 3rd years members cards (Eli, Nozomi, Nico, Kanan, Dia, Mari)	Increases the card's Pure stat by 10% can only be equipped on 3rd years members cards (Eli, Nozomi, Nico, Kanan, Dia, Mari)	Increases the card's Cool stat by 10% can only be equipped on 3rd years members cards (Eli, Nozomi, Nico, Kanan, Dia, Mari)
Smile Cross [1st years]	Pure Cross [1st years]	Cool Cross [1st years]
requires 3 slots	requires 3 slots	requires 3 slots
selling price: 26000 G	selling price: 26000 G	selling price: 26000 G
Increases the card's Smile stat by 16% can only be equipped on 1st years members cards (Rin, Maki, Hanayo, Yoshiko, Ruby, Hanamaru)	Increases the card's Pure stat by 16% can only be equipped on 1st years members cards (Rin, Maki, Hanayo, Yoshiko, Ruby, Hanamaru)	Increases the card's Cool stat by 16% can only be equipped on 1st years members cards (Rin, Maki, Hanayo, Yoshiko, Ruby, Hanamaru)
Smile Cross [2nd years]	Pure Cross [2nd years]	Cool Cross [2nd years]
requires 3 slots	requires 3 slots	requires 3 slots
selling price: 26000 G	selling price: 26000 G	selling price: 26000 G
Increases the card's Smile stat by 16% can only be equipped on 2nd years members cards (Honoka, Kotori, Umi, Chika, Riko, You)	Increases the card's Pure stat by 16% can only be equipped on 2nd years members cards (Honoka, Kotori, Umi, Chika, Riko, You)	Increases the card's Cool stat by 16% can only be equipped on 2nd years members cards (Honoka, Kotori, Umi, Chika, Riko, You)
Smile Cross [3rd years]	Pure Cross [3rd years]	Cool Cross [3rd years]
requires 3 slots	requires 3 slots	requires 3 slots
selling price: 26000 G	selling price: 26000 G	selling price: 26000 G
Increases the card's Smile stat by 16% can only be equipped on 3rd years members cards (Eli, Nozomi, Nico, Kanan, Dia, Mari)	Increases the card's Pure stat by 16% can only be equipped on 3rd years members cards (Eli, Nozomi, Nico, Kanan, Dia, Mari)	Increases the card's Cool stat by 16% can only be equipped on 3rd years members cards (Eli, Nozomi, Nico, Kanan, Dia, Mari)
Smile Aura	Pure Aura	Cool Aura
requires 3 slots	requires 3 slots	requires 3 slots
selling price: 26000 G	selling price: 26000 G	selling price: 26000 G
Increases the team's Smile stat by 1.8%	Increases the team's Pure stat by 1.8%	Increases the team's Cool stat by 1.8%
Smile Veil	Pure Veil	Cool Veil
requires 4 slots	requires 4 slots	requires 4 slots
selling price: 35000 G	selling price: 35000 G	selling price: 35000 G
Increases the team's Smile stat by 2.4%	Increases the team's Pure stat by 2.4%	Increases the team's Cool stat by 2.4%
Princess Charm	Princess Heel	Princess Trick
requires 4 slots	requires 4 slots	requires 4 slots
selling price: 35000 G	selling price: 35000 G	selling price: 35000 G
Multiplies the card's Score Up skill power by 2.5 can only be equipped on Smile cards will only have an use on Score Up cards	When Stamina is full, increases score by 480x[HP recovered by Healer skill] when the card's Healer skill activates can only be equipped on Smile cards will only have an use on Healer cards	Increases the card's Smile stat by 33% when a Perfect Lock is active can only be equipped on Smile cards
Angel Charm	Angel Heel	Angel Trick
requires 4 slots	requires 4 slots	requires 4 slots
selling price: 35000 G	selling price: 35000 G	selling price: 35000 G
Multiplies the card's Score Up skill power by 2.5 can only be equipped on Pure cards will only have an use on Score Up cards	When Stamina is full, increases score by 480x[HP recovered by Healer skill] when the card's Healer skill activates can only be equipped on Pure cards will only have an use on Healer cards	Increases the card's Pure stat by 33% when a Perfect Lock is active can only be equipped on Pure cards
Empress Charm	Empress Heel	Empress Trick
requires 4 slots	requires 4 slots	requires 4 slots
selling price: 35000 G	selling price: 35000 G	selling price: 35000 G
Multiplies the card's Score Up skill power by 2.5 can only be equipped on Cool cards will only have an use on Score Up cards	When Stamina is full, increases score by 480x[HP recovered by Healer skill] when the card's Healer skill activates can only be equipped on Cool cards will only have an use on Healer cards	Increases the card's Cool stat by 33% when a Perfect Lock is active can only be equipped on Cool cards
Smile Wink	Pure Wink	Cool Wink
requires 5 slots	requires 5 slots	requires 5 slots
selling price: 44000 G	selling price: 44000 G	selling price: 44000 G
Increases the card's Smile stat by 1400	Increases the card's Pure stat by 1400	Increases the card's Cool stat by 1400
Smile Trill [1st years]	Pure Trill [1st years]	Cool Trill [1st years]
requires 5 slots	requires 5 slots	requires 5 slots
selling price: 44000 G	selling price: 44000 G	selling price: 44000 G
Increases the card's Smile stat by 28% can only be equipped on 1st years members cards (Rin, Maki, Hanayo, Yoshiko, Ruby, Hanamaru)	Increases the card's Pure stat by 28% can only be equipped on 1st years members cards (Rin, Maki, Hanayo, Yoshiko, Ruby, Hanamaru)	Increases the card's Cool stat by 28% can only be equipped on 1st years members cards (Rin, Maki, Hanayo, Yoshiko, Ruby, Hanamaru)
Smile Trill [2nd years]	Pure Trill [2nd years]	Cool Trill [2nd years]
requires 5 slots	requires 5 slots	requires 5 slots
selling price: 44000 G	selling price: 44000 G	selling price: 44000 G
Increases the card's Smile stat by 28% can only be equipped on 2nd years members cards (Honoka, Kotori, Umi, Chika, Riko, You)	Increases the card's Pure stat by 28% can only be equipped on 2nd years members cards (Honoka, Kotori, Umi, Chika, Riko, You)	Increases the card's Cool stat by 28% can only be equipped on 2nd years members cards (Honoka, Kotori, Umi, Chika, Riko, You)
Smile Trill [3rd years]	Pure Trill [3rd years]	Cool Trill [3rd years]
requires 5 slots	requires 5 slots	requires 5 slots
selling price: 44000 G	selling price: 44000 G	selling price: 44000 G
Increases the card's Smile stat by 28% can only be equipped on 3rd years members cards (Eli, Nozomi, Nico, Kanan, Dia, Mari)	Increases the card's Pure stat by 28% can only be equipped on 3rd years members cards (Eli, Nozomi, Nico, Kanan, Dia, Mari)	Increases the card's Cool stat by 28% can only be equipped on 3rd years members cards (Eli, Nozomi, Nico, Kanan, Dia, Mari)
Smile Bloom	Pure Bloom	Cool Bloom
requires 6 slots	requires 6 slots	requires 6 slots
selling price: 53000 G	selling price: 53000 G	selling price: 53000 G
Increases the team's Smile stat by 4%	Increases the team's Pure stat by 4%	Increases the team's Cool stat by 4%
Smile Powerful	Pure Powerful	Cool Powerful
requires 4 slots	requires 4 slots	requires 4 slots
selling price: 35000 G	selling price: 35000 G	selling price: 35000 G
Increases the card's Smile stat by 29% can only be equipped on Honoka cards	Increases the card's Pure stat by 29% can only be equipped on Honoka cards	Increases the card's Cool stat by 29% can only be equipped on Honoka cards
Smile Prima	Pure Prima	Cool Prima
requires 4 slots	requires 4 slots	requires 4 slots
selling price: 35000 G	selling price: 35000 G	selling price: 35000 G
Increases the card's Smile stat by 29% can only be equipped on Eli cards	Increases the card's Pure stat by 29% can only be equipped on Eli cards	Increases the card's Cool stat by 29% can only be equipped on Eli cards
Smile Chirp	Pure Chirp	Cool Chirp
requires 4 slots	requires 4 slots	requires 4 slots
selling price: 35000 G	selling price: 35000 G	selling price: 35000 G
Increases the card's Smile stat by 29% can only be equipped on Kotori cards	Increases the card's Pure stat by 29% can only be equipped on Kotori cards	Increases the card's Cool stat by 29% can only be equipped on Kotori cards
Smile Shooter	Pure Shooter	Cool Shooter
requires 4 slots	requires 4 slots	requires 4 slots
selling price: 35000 G	selling price: 35000 G	selling price: 35000 G
Increases the card's Smile stat by 29% can only be equipped on Umi cards	Increases the card's Pure stat by 29% can only be equipped on Umi cards	Increases the card's Cool stat by 29% can only be equipped on Umi cards
Smile Kitty	Pure Kitty	Cool Kitty
requires 4 slots	requires 4 slots	requires 4 slots
selling price: 35000 G	selling price: 35000 G	selling price: 35000 G
Increases the card's Smile stat by 29% can only be equipped on Rin cards	Increases the card's Pure stat by 29% can only be equipped on Rin cards	Increases the card's Cool stat by 29% can only be equipped on Rin cards
Smile Diva	Pure Diva	Cool Diva
requires 4 slots	requires 4 slots	requires 4 slots
selling price: 35000 G	selling price: 35000 G	selling price: 35000 G
Increases the card's Smile stat by 29% can only be equipped on Maki cards	Increases the card's Pure stat by 29% can only be equipped on Maki cards	Increases the card's Cool stat by 29% can only be equipped on Maki cards
Smile Fortune	Pure Fortune	Cool Fortune
requires 4 slots	requires 4 slots	requires 4 slots
selling price: 35000 G	selling price: 35000 G	selling price: 35000 G
Increases the card's Smile stat by 29% can only be equipped on Nozomi cards	Increases the card's Pure stat by 29% can only be equipped on Nozomi cards	Increases the card's Cool stat by 29% can only be equipped on Nozomi cards
Smile Flower	Pure Flower	Cool Flower
requires 4 slots	requires 4 slots	requires 4 slots
selling price: 35000 G	selling price: 35000 G	selling price: 35000 G
Increases the card's Smile stat by 29% can only be equipped on Hanayo cards	Increases the card's Pure stat by 29% can only be equipped on Hanayo cards	Increases the card's Cool stat by 29% can only be equipped on Hanayo cards
Smile Galaxy	Pure Galaxy	Cool Galaxy
requires 4 slots	requires 4 slots	requires 4 slots
selling price: 35000 G	selling price: 35000 G	selling price: 35000 G
Increases the card's Smile stat by 29% can only be equipped on Nico cards	Increases the card's Pure stat by 29% can only be equipped on Nico cards	Increases the card's Cool stat by 29% can only be equipped on Nico cards
Smile Orange	Pure Orange	Cool Orange
requires 4 slots	requires 4 slots	requires 4 slots
selling price: 35000 G	selling price: 35000 G	selling price: 35000 G
Increases the card's Smile stat by 29% can only be equipped on Chika cards	Increases the card's Pure stat by 29% can only be equipped on Chika cards	Increases the card's Cool stat by 29% can only be equipped on Chika cards
Smile Blossom	Pure Blossom	Cool Blossom
requires 4 slots	requires 4 slots	requires 4 slots
selling price: 35000 G	selling price: 35000 G	selling price: 35000 G
Increases the card's Smile stat by 29% can only be equipped on Riko cards	Increases the card's Pure stat by 29% can only be equipped on Riko cards	Increases the card's Cool stat by 29% can only be equipped on Riko cards
Smile Dolphin	Pure Dolphin	Cool Dolphin
requires 4 slots	requires 4 slots	requires 4 slots
selling price: 35000 G	selling price: 35000 G	selling price: 35000 G
Increases the card's Smile stat by 29% can only be equipped on Kanan cards	Increases the card's Pure stat by 29% can only be equipped on Kanan cards	Increases the card's Cool stat by 29% can only be equipped on Kanan cards
Smile Plum	Pure Plum	Cool Plum
requires 4 slots	requires 4 slots	requires 4 slots
selling price: 35000 G	selling price: 35000 G	selling price: 35000 G
Increases the card's Smile stat by 29% can only be equipped on Dia cards	Increases the card's Pure stat by 29% can only be equipped on Dia cards	Increases the card's Cool stat by 29% can only be equipped on Dia cards
Smile Voyage	Pure Voyage	Cool Voyage
requires 4 slots	requires 4 slots	requires 4 slots
selling price: 35000 G	selling price: 35000 G	selling price: 35000 G
Increases the card's Smile stat by 29% can only be equipped on You cards	Increases the card's Pure stat by 29% can only be equipped on You cards	Increases the card's Cool stat by 29% can only be equipped on You cards
Smile Little Demon	Pure Little Demon	Cool Little Demon
requires 4 slots	requires 4 slots	requires 4 slots
selling price: 35000 G	selling price: 35000 G	selling price: 35000 G
Increases the card's Smile stat by 29% can only be equipped on Yoshiko cards	Increases the card's Pure stat by 29% can only be equipped on Yoshiko cards	Increases the card's Cool stat by 29% can only be equipped on Yoshiko cards
Smile Future	Pure Future	Cool Future
requires 4 slots	requires 4 slots	requires 4 slots
selling price: 35000 G	selling price: 35000 G	selling price: 35000 G
Increases the card's Smile stat by 29% can only be equipped on Hanamaru cards	Increases the card's Pure stat by 29% can only be equipped on Hanamaru cards	Increases the card's Cool stat by 29% can only be equipped on Hanamaru cards
Smile Shiny	Pure Shiny	Cool Shiny
requires 4 slots	requires 4 slots	requires 4 slots
selling price: 35000 G	selling price: 35000 G	selling price: 35000 G
Increases the card's Smile stat by 29% can only be equipped on Mari cards	Increases the card's Pure stat by 29% can only be equipped on Mari cards	Increases the card's Cool stat by 29% can only be equipped on Mari cards
Smile Lollipop	Pure Lollipop	Cool Lollipop
requires 4 slots	requires 4 slots	requires 4 slots
selling price: 35000 G	selling price: 35000 G	selling price: 35000 G
Increases the card's Smile stat by 29% can only be equipped on Ruby cards	Increases the card's Pure stat by 29% can only be equipped on Ruby cards	Increases the card's Cool stat by 29% can only be equipped on Ruby cards
Smile Nonet [µ's]	Pure Nonet [µ's]	Cool Nonet [µ's]
requires 4 slots	requires 4 slots	requires 4 slots
selling price: 35000 G	selling price: 35000 G	selling price: 35000 G
Increases the team's Smile stat by 4.2% needs the team to be composed of each member of µ's to be active (Honoka, Eli, Kotori, Umi, Maki, Rin, Nozomi, Hanayo, Nico)	Increases the team's Pure stat by 4.2% needs the team to be composed of each member of µ's to be active (Honoka, Eli, Kotori, Umi, Maki, Rin, Nozomi, Hanayo, Nico)	Increases the team's Cool stat by 4.2% needs the team to be composed of each member of µ's to be active (Honoka, Eli, Kotori, Umi, Maki, Rin, Nozomi, Hanayo, Nico)
Smile Nonet [Aqours]	Pure Nonet [Aqours]	Cool Nonet [Aqours]
requires 4 slots	requires 4 slots	requires 4 slots
selling price: 35000 G	selling price: 35000 G	selling price: 35000 G
Increases the team's Smile stat by 4.2% needs the team to be composed of each member of Aqours to be active (Chika, Riko, Kanan, Dia, You, Yoshiko, Hanamaru, Mari, Ruby)	Increases the team's Pure stat by 4.2% needs the team to be composed of each member of Aqours to be active (Chika, Riko, Kanan, Dia, You, Yoshiko, Hanamaru, Mari, Ruby)	Increases the team's Cool stat by 4.2% needs the team to be composed of each member of Aqours to be active (Chika, Riko, Kanan, Dia, You, Yoshiko, Hanamaru, Mari, Ruby)

data from Caraxian, thank you!