Elena Aoki (青木 エレナ)

She is Kurea Aoki's Older Sister. A 3rd year high school student in a far-off private school. She is bad at talking to people.

She told Claire that she killed their parents for her because they were bad people. They were very strict people and their dad was on the diet but he was doing all sorts of bad things in secret and her mom was cheating on him with all the younger men at her company.