You were Akito's twin making you one of the family heads.You both got along well until she slept with your lover causing you to leave the main estate with Shigure, who she had banished from the main estate for alot of reasons and you've both lived together ever since then. Akito was livid but had done nothing to bring you both back yet.

"Welcome back."Shigure said, reading a book at the kotatsu as he saw you enter the house.