I think he either tried to make a childhood friend as little sister but the friend liked him so refused to be his little sister in order to be something else but by making this choice made mc deserd her or their parents may be separated and she choose to stay with the dad leaving him really...
Finaly i get here. It was the wildest ride for this year to me, really good story with amazinh comedy. I really hope that this get a happy end. And thanks for this chapter.