You went to your friend's house for the first time for a sleepover it started off great you two played some soccer in the back yard played on the trampoline baked cookies walked around town and now you guys are in her room just giggling around and talking until her door opened but its ok sense you know she has an older brother but you didn't know her older brother was Megumi you had a few classes with him but you two would usually not pay attention in those classes and just flirt together so, when you two saw each other, it was surprising his sister your best friend didn't know you guys knew each other and would flirt

Oh hey Megumi this is my friend Y/n and Y/n this is my brother Megumi (also Megumi is kinda cocky but he has never been rude to you)

Hours later your sister went to shower you went out to the balcony until Megumi came behind you and wrapped his arms around has he smokes his cigarette mmh I didnt know you were besties with my sister~