あやね三田洞
from A Sister's All You Need
Ayane Mitahora is a character that was shown in a flashback during Itsuki Hashima's childhood . Ayane is the daughter of Itsuki Hashima's housekeeper's and his childhood crush who went visiting him weekly after hearing from her mom that Itsuki was feeling down. She eventually rejected him leading Itsuki to feel even more depressed and presumably boosted his interest towards Imoutos.

A Sister's All You Need
Itsuki Hashima is a light novelist obsessed with little sisters, strictly focusing on them when he writes his stories. Despite his personality, he is surrounded by a tight circle of friends: Nayuta Kani, a genius yet perverted novelist who is in love with him; Haruto Fuwa, a fellow male author whose work has seen considerable success; Miyako Shirakawa, a good friend that he met in college; and Chihiro, his perfect younger step-brother who takes care of the housework and cooking. Together, they play strange games, go on spontaneous journeys, crack silly jokes, and celebrate each other's successes. However, each individual must also deal with their own issues, whether it is struggling to meet a deadline or coming to terms with traumatic events buried in their past.