Third-year student of Mihama Academy, the Onee-san type who always takes care of others. She is known as Makina's "mom". For some circumstances, she skipped one school year at her previous school, so she is actually 2 years older than Yūji. She is tall and has a good body which she tries using to seduce Yūji. Her family manages a long-established restaurant in Ginza, so she is good at cooking. Because of her mother coming from Kyoto, when getting excited, or while panicking, she picks up Kansai dialect in her speech. She is deeply interested in cars and has acquired an automatic two-wheeled vehicle license. Amane also has a dirt bike which was remodeled to a cruiser called "Boba Tarou" (ボバ太郎) and was put in the garage of the Academy.

Le Fruit de la Grisaia (The Fruit of the Grisaia in French), originally titled Grisaia no Kajitsu (Japanese: グリザイアの果実 Hepburn: Gurizaia no Kajitsu), is a Japanese adult visual novel, the first in a series of visual novels by Front Wing, with character designs by Akio Watanabe and Fumio. This game was later ported to the PlayStation Portable and PlayStation Vita. There have been two manga adaptations published by Akita Shoten and Mag Garden. An anime television series produced by 8-Bit began airing in Japan in October 2014.