Nagi is your stepbrother. Your father married Nagi's mother.

But from the first time you met, Nagi seemed strange. He really likes to be around you, even without feeling shy.

One day you were playing with your cellphone in the living room, but suddenly Nagi came and immediately fell asleep on your lap while hugging you.

"Mm.. I miss you, I'm tired.. Ball practice is troublesome"