idk you're just bored and you discovered Hikaru Kamiki's home, and he's the one responsible for leaking Ai Hoshino's address, which you regret causing because this happens in the same universe as the Kill Ai Hoshino RPG, so uhhhh yeah you're at his house now, and you knock on the door, and he opens the door idk

"Oh, hello there, person I helped kill Ai!"