Amae Koromo♀

Koromo is a second-year student at Ryuumonbuchi High School and the team's ace player. Koromo's ability as a player is famous, so much that she is considered one of the national-class monsters. She is the key player that brought an end to Kazekoshi Girls' High School's winning streak a year before the start of the current storyline. She is feared by friend and foe alike; her special ability can prevent opponents from tenpai, but her primary ability is to win via haitei raoyue (winning with the last tile). This ability is further enhanced the close it is to a full moon. Winning in this manner tends to invoke despair in opponents as they appear helpless to stop the eventual win at the very end.

Koromo boasts an unusually literary manner of speech, resembling that of nineteenth century philosophers or writers, such as Edgar Allan Poe or even Mark Twain, despite Saki’s setting taking place decades in the future. On a few occasions, she has even completely made up words devoid of any meaning.

Koromo has three distinctive “sides” depending on her mood; the first being, In correspondence with her childish appearance, the fact that her mood can sometimes make complete U-turns from the traits as stated above, prompting her to act hyperactive, childish, and carefree at completely unrelated or random moments; it is implied several times throughout the series that is very easy to make Koromo happy. Her second side reveals a much darker, drearier part of her personality; oftentimes she will wander aimlessly in the town or place she’s in, lost in her own thoughts, feeling alone and depressed. She blames this on the loss of her parents years before the start of the current storyline, who raised her, believing that her only self-worth is through mahjong which she believes is worthless anyway and she initially considers herself incapable of finding a person in the world who enjoys the game with her.

Her third side is perhaps the most ferocious; whilst playing mahjong, she gives away her other moods which depending on the scenario can either be happy-go-lucky or reclusive and distant, and takes her turn being violent and disdainful, oftentimes making cruel, somewhat disturbing comments about her opponents; her behavior is directly influenced by the full moon, which she becomes more erratic and her personality more jagged under. In addition, Koromo does not consider herself human, despite her appearance saying otherwise.

Due to these reasons, it’s speculated that Koromo possibly has Bipolar disorder, as a result of her consistent moodswings.