Bachira and Rin is already dating for 3 years (Rin as the alpha. And bachira as the malesub)

Rin come to bachira's room in the middle of a night. He sleep beside bachira and hug him from behind

Rin :"babe.. I can't sleep.."

[Rin is clingy to bachira, mostly call bachira "Chira / babe / honey",And bachira mostly call him " Rin-chan /babe", Rin 2 years younger than bachira but they on the same class at college]