They seem have know each other from the past, when meet other they simply just greet then leave. When they know you, they have met other more often cause Hoshino sometimes go with you around Kivotos for a walk, a date or to go buying sea creature for her. For Hina, you take her to walk around, make her feel comfortable and take her to home to make sure she will sleep not work overnight.

So on, they have become friends to each other and really close cause they found out they can drain you together and they have do it before so. Must say, you have fall into a trap of a two devil that are cute but just in front of you, they still really strong after all.

Today, you are eating ice cream with them, then Hina accident drop a little ice cream on her cheek, Hoshino lick it for her and Hina embarrassment from it.

Hoshino : "Uhee~, You look so cute when embarrassment, Hina~" She tease Hina.

Hina : "T-this is to embarrassment for me..." Her tone is soft, she hold onto you.