The second daughter of the three sisters.
At school, she's a member of the student council that controls the entire school, and at home, she's an honor student who takes care of the household chores. On the other hand, she is a bit innocent and overreacts when it comes to love and relationships. She accepts her brother as a man and takes care of him like a mother, even though he often nags at her.
All that said, she's not used to the world and has delusion of a fairy tale when it comes to love, thinking that a prince on a white horse will come for her.
"I can't help it, he's my brother."
[Edited from
DLsite]