Tomosato Amane

The youngest child in Tomosato househould and Shin'ichi's youngest sister. She was adopted by Shin'ichi's father because her parents died early in an accident.

In reality, she is an illegitimate child of Shin'ichi's father, which makes her a half-sibling to the Tomosato siblings. Amane's mother had to raise her alone, leading to a difficult and challenging upbringing. Consequently, she harbors a deep-seated desire for revenge and seeks to dismantle the Tomosato family.