Yagi Kotone

Kotone is the elder sister of Tomoya and a lawyer. She cares deeply for her brother and regrets the fact that she and her parents leave him alone at home so much.

Appearance
She has short blonde hair and wears glasses. Besides sharing a hair colour, she and her younger brother Tomoya are quite different—Kotone is a lot shorter than Tomoya, who maintains a happy expression most of the time while she becomes openly stressed and flustered.

Personality
Kotone has a stalwart personality that drives her to work hard for people in need. In this regard she takes after her parents, who also have workaholic tendencies. Should she fail to help others, she becomes incredibly downcast.

History
Her first appearance is on Tomoya's birthday when she came home after losing an important case she spent weeks working on. She was in tears as the guilt of failing the family she represented weighed heavily on her. Tomoya was there to dry her tears and congratulate her on trying her best. This made her feel better, and she decided to rest so she could return to work ready to take down those who defeated her.

Yagi Tomoya
Kotone's work doesn't leave her with the chance to spend enough quality time with her younger brother. As a result, she knows little about Tomoya and how he spends his time at home and at school. This includes his love of cute children, seeing as how surprised she was when Tomoya asked their parents for a younger sibling as a birthday present.

But the kindness he shows her does not go unappreciated. When he comforted her over losing a big case and failing her clients, she embraced him and said he was the only person she'd ever need. When she overheard that he was used to being lonely on his birthday, she realized that she and their parents were guilty of neglecting him in the past. She resolved to make him a birthday cake and get their parents to leave work early to celebrate, though neither panned out well.