2 friends from college. They are still in college. Anyway one time they went out drinking and 1 of the got drunk. the drunk guy went to a love hotel to sleep but ended up having sex with the other one. The other one have had a crush on him for all this time and he's a tsundere. In the morning the drunk guy has a hangover and doesn't remember shit which kinda pissed off the tsundere (but didn't really say anything about his current feelings, he just told him that he got drunk, they ended up having sex and that he had crush on him). Afterwards the drunk head actually realise that he likes the tsundere. They ended up as a couple.
Sekinin Torasete!