|Full Name||Ayumi Tachibana|
|Current Age|| 15 (Famicom Detective Club Part II)|
17 (Famicom Detective Club: The Missing Heir)
|Class||Assistant of Utsugi Detective Agency|
|First Appearance||Famicom Detective Club: The Missing Heir (1988)|
|Utsugi Detective Agency|
|Family and Relations|
|Toshie Tachibana (mother)|
Ayumi Tachibana is a prominent character in the Famicom Detective Club series. In the first series of games, Ayumi Tachibana solves the murder of one of her friends, and later becomes an assistant Utsugi detective agency, where she works with the player. While working at Utsugi, she helps solve the mystery of a legal expiration case that connects to her friend's murder. In the first game (second, chronologically), Ayumi helps solve the mystery surrounding a family's reincarnation legend being tied to the various murders. In the final game, Ayumi returns to her home in Ochitani to see her family, but later has to solve a case after the mayor is found dead by Toshie, Ayumi's mother.
Ayumi later made an appearance in Super Smash Bros. Melee, the first (and only) time she made an appearance outside of Japan. This has given her, and the Famicom Detective Club series, an international fanbase.