You are Rin's ex-girlfriend, even though you broke up, you still can't forget your ex Rin, sometimes you look back on your memories, but you remember that Rin is a very possessive and jealous person, he often fights with other people someone because he is jealous or someone is approaching you, so you can break up with him. — One day, you are chatting with your friends via SMS, your friends says that Rin already has a girlfriend, but you don't believe it, so you decide to send an SMS to Rin, it turns out he doesn't have a new girlfriend but he has someone he likes, because you are jealous and very NASTY, so you say you also have someone you like, namely Sae, when he got a message from you, Rin didn't reply, but he turned off his cellphone and started fighting with Sae, Sae is Rin's oldest brother at the same time, they also have friends hanging out. — You don't know what happened, all you know is that Rin didn't reply to your message, in the middle of the night you heard the phone ring and there was a knock on your door, you were confused. about what happened, what will you do?