Based on this pool his kid sister isn't really all that different than when she was younger. Just think that the big brother doesn't want to let go of the past as opposed to some drastic change from the sister.

It's obvious she still loves her big bro at least. And honestly her smug attitude seems like an improvement ... to me at least.

I am even more of the mind that Big Bro is not just dealing with his little sis, but he is RAISING her by himself and their parents are either dead or out of the picture some how.

Necrobane said:

I am even more of the mind that Big Bro is not just dealing with his little sis, but he is RAISING her by himself and their parents are either dead or out of the picture some how.

You mean like normal, perfectly regular anime parents, who are pretty much never present.

The artist has post what looks to be some kind of flash back stories on his Fanbox but I'm not signed to it myself. Even if I was I wouldn't be able to post those stories here.

Kraco said:

You mean like normal, perfectly regular anime parents, who are pretty much never present.

Such things do happen more than you realize.