Aikatsu System

The **Aikatsu System** (*アイカツシステム*, stylized as *Aikatsu! System*) is the digital system created by the idol enthusiast Ryuichi Kimura. Through this system, idols can perform in a unique way using advanced holographic display technologies and special effects in digitalized stages. The system is managed and maintained by the Aikatsu Company and uses **Aikatsu Cards** that provide clothes for idols to wear in their shows and auditions.

## Aikatsu Cards

The **Aikatsu Cards** (*アイカツカード*) are used by idols to dress up their appearance when performing on stage using the Aikatsu System. The Cards contain digitized clothes that come from various types of Brands, each one having its own top designer who works to create pieces. There are also brandless Cards, mostly released by the Aikatsu Company or other idol-related organizations such as schools or agencies. The Aikatsu Cards are divided according to their Idol Type, Outfit Category, and Rarity.

### Idol Types

(*キュート*)
(*クール*)
(*セクシー*)
(*ポップ*)

### Outfit Categories

(*トップス*)
(*ボトムス*)
(*シュース*)
(*アクセサリー*)
(*トップス&ボトムス)*

### Rarities

(*ノーマル*)
(*レア*)
(*プレミアム*)

There's a subcategory of Normal cards called **School Dresses** (*スクールドレス*). These are uniform-like cards given by schools like Fourth Harmony Academy to their students. They have higher appeal than most Normal cards and are mostly identical to each other with some color changes. There's also a subcategory of Rare cards called **Campaign Rare** that refers to coords that are part of limited-time Campaigns and can only be obtained during that period. Although most clothes come in specific coordination, idols can mix and match cards from different Types, Rarities, and Brands to create **Good Coords**. Due to the risk of creating bad combinations, most idols prefer to avoid it.

## Special Appeal

**Special Appeal** (*スペシャルアピール*) is a type of stage illusion used by idols when performing using the Aikatsu System. These usually involve summoning elements to the stage for the idol to perform quick interactions with and create dazzling visual moments for the audience without interrupting the flow of the show or audition. Most idols can perform up to three Special Appeals during a single performance. The types of Appeal that can be performed vary depending on the Cards used. Special Appeals are tied to Cardsattributes like Idol Type, Brand, Rarity and Campaign.

### Brandless Appeals

Brandless Appeals are also known as **Type Appeals** since they can be performed regardless of Brand, Rarity or Campaign. Most idols use them as their first Appeal during shows and auditions since they're very easy to execute and have a quick visual impact. They can be performed in pairs and trios as well.

 Cool Trick
 Sexy Trick
 Pop Trick

### Brand Appeals

Special Appeals tied to Brands have variations according to the rarity of the Cards used. Premium Cards offer a version of the Appeal with changes to the normal version elements and the inclusion of new motifs. These Appeals don't have any duet or group variation, making them one-person only.

 Wonderful Clock |  | The idol steps on a stopped copper clock and spins as copper gears spiral around them and engage the clockwork's machinery. The idol poses before the clock as it lights up and spins.

### Unit Appeals

Official Idol Units have their own Special Appeal tied to the Unit members. **Unit Appeals** share the same moves according to the number of members in the Unit, but each group has a version of the Appeal with its own aesthetic and motifs. These are the only Appeals that don't require Card attributes but specific idols to be executed.

### Campaign Appeals

Campaigns with exclusive, time-limited Cards have a Special Appeal that's shared between the Coords despite their Idol Type or Brand. These Appeals can be performed in pairs and trios and do not have Rarity-based variations.

## Idol Aura

The **Idol Aura** (*アイドルオーラ*) is the visual "trademark" of an idol. Each idol has a different Aura depending on their Type, theme, and personality. Even though it can be felt by some people off-stage, the Aura is usually only visible during performances. The Aura can suffer external influences that modify its structure such as the presence of other people on stage, the idol's emotions, and the clothes worn. These changes can be temporary or permanent.

### Group Auras

When performing together idols can achieve a **Group Aura** that unites the individual Auras present on stage into a larger one. This happens most frequently with official Idol Units but the only requirement for a Group Aura is the synchrony between the idols. Sometimes, instead of a union between Auras, a single individual Aura can be strong enough to make the others around it disappear completely.

## Trivia

* The Aikatsu System is capable of not only reading the physical and emotional state of an idol but also that of the audience. There's an **audience cheering meter** that stands behind the idol on the stage and scales with claps, shouts, chants, and overall excitement in the audience.
* This system was created for idols on live performances but quickly gained enough popularity to be extended to different branches like bands, drama shows, and modeling.