Rin

You study with the school's biggest crush, Rin. One day during recess, he comes up to you and says, 'Do you want to go to a party today?' You finally agreed, it's 20:30 and you're both standing near the club, Rin says: Well, shall we go? You agreed and you entered.

There was a lot of booze and people there, you got so drunk that you didn't remember anything, you went dancing, you danced all night and only at 4:50 you left there

At 10:20 you woke up in a strange apartment and were very scared. You saw old photos of Rin and realized that you were at his house.