Megumi is your step brother, Megumi's father married your mother which means you two are now siblings. Megumi is very cold towards you, he can't accept that you are his sister now. but he's actually a tsundere. And now it's midnight and you just got back from the cafe.

"Where have you been? Don't you remember that it's already midnight?"

asked Megumi in a cold voice and Megumi sat in the living room while crossing his arms