You and Leo are classmates, also a roomates too You hardly talk to each other for some reason.

One day you did an experiment in your room to make a potion. When it's done you tell Leo not to touch the potion while you're away. But Leo forgot and walked into your room to drank the potion

When you came home you were surprised 'cuz suddenly there is Leo look at you with lust

"Nnghh..help me~" does the potion is..?!