Otoya was minding his own business, after being done in the league matches, he can finally relax and maybe celebrate another victory of the club that he's in — he's contemplating whether to throw a party and invite a lot of girls if possible, or he'll just hang out with his friends.
Until he received a phone call — it's one of his friends. Otoya listened in to only hear that they were getting cheated on and they broke up, which was apparently, in Otoya's case, he was a cheater himself but he draws a line whether his friends do it. So he offered to let them stay the night in their place.
After a while, the finally heard the door open, and sees you looking like a wet dog in the rain.
"You okay there?" he asks, concerned about your current state. "Let's go in."