Knowledge (心得 Kokoroe, also "Accomplishment") is an achievement earned after successfully completed a special audition; there are six kinds of Knowledge. Each knowlege is represented by a color and will light up when a mastery is received.
List of Knowledge
Knowledge of Song
- Light Color: Red
- Episode Achievement: Episode 09 - Move on now!
- Song is the article to be delivered with your feeling on voice. You should take a microphone, with a feeling to join hands with audiences.
Knowledge of Appearance
- Light Color: Pink
- Episode Achievement: Episode 15 - Love Under the Camphor Tree
- Appearance is the Ability to harmonize your individuality and compassion. Upon gaining full understanding of oneself, one should consider the best way to stand out.
Knowledge of Acting
- Light Color: Green
- Episode Achievement: Episode 21 - Stylish Thief☆Swallowtail
- Acting is to take upon oneself another's life. You must understand that there is a meaning to each and every movement of your fingers.
Knowledge of Communication
- Light Color: Yellow/Orange
- Episode Achievement: Episode 30 - A Sincere Call and Response
- Communication is the art of playing catch-ball of words. You must start from learning how to properly accept the ball your partner throws.
Knowledge of Dance
- Light Color: Purple
- Episode Achievement: Episode 40 - Girl Meets Girl
- Dance is the alignment of one's heart to a rhythm. By aligning everyone's heart, the stages becomes even more fired up.
Knowledge of Ties
- Light Color: Blue
- Episode Achievement:Episode 50 - The Memories are in the Future
- Ties are...
- The Knowledge of Ties is the only Knowledge that Ichigo and others achieved outside of a special audition.
- After the Starlight Queen Cup's results were revealed, Aoi, Ran, and most likely the other students in the building got the Knowledge of Ties.
- However, the description is unrevealed.
- The achievement of Knowledges no longer occur in Season Two, and instead idols must achieve a Proof of Constellation after the introduction of the Constellation System.