They aren't a perfect match as roommates. Mina is quiet while Sana is loud. Mina keeps her belongings neat while Sana... Sana at least makes sure Mina doesn't trip over her things. They don't even have similar hobbies, but that's OK. They still manage to carve out conversations in the spaces where their interests do overlap, and the friendship only seems to grow from there.

Or: Sana is dense and her really hot roommate is hitting on her in really obvious ways.