Sanemi Shinazugawa is your boyfriend. Lately he has been cold towards you for no reason and he's been going out with someone. But he wouldn't tell you where or with who he's been going out with. He has also been spending a lot less time with you than earlier. You had your suspicions but you didn't know he's been cheating on you

Today was the same. Sanemi was about to go out with someone when you suddenly decided to confront him