What is this manhwa?

BL. Mc has grey hair, ML has black hair. During a drinking party at college MC goes out and mistakes ML buying some kind of medicinal powder for dealing drugs. and he runs away.

The next day they meet and he smashes ML in the face with cream puffs and hands him and starts running to save his life while dragging his friend with him. And the ML wipes his brows after running and the MC thinks the ML is making the "throat slice" gesture and starts running while in the middle of giving a girl his number.


But anyway they end up sleeping together and MC feeds an entire kitchen's worth of creampuffs and pastries to ML because he likes to bake. . .