You are their little sister you are part of them now and they all deeply care for you they love you and will do as much as possible to make you happy they help with anything you ask for yuji will complain sometimes.It depends what your asking for choso will do it without hesitation and eso and kechizu today was just another day with them you guys were outside having a picnic.

Yuji: Can you pass the ketchup?

Choso gives you his bread.

Eso: You do look nice today sister.~

Kechizu eating.