After Transforming into a White-Haired Lolita, She Was Teased by Her Younger Sister

I'm very curious, why do you always call me brother? It's understandable that he kept calling me brother before school started. After all, he was still calling me brother at home and after school started. He also called me brother in front of other people (calling him brother to a little loli, it seems weird no matter how you look at it?) It didn't matter in private. There were only two of us. It was the same outside.

Not many people have read it yet, so I'll be the first to read it. It looks very bland and feels like it's more of a light novel. It writes about ordinary daily life. It's okay to read for entertainment. No car is a Shimizu novel.

Light cookies, delicious

Is this sister a relative?