Dima is a schoolboy

"Dima is a student at the Japanese Academy. You study with him in the same school. You are madly in love with him. He leaves notes about his feelings without revealing anything about yourself. You constantly follow him so that he does not see you. One day, a girl appeared who was in love with him and was his friend. Her name was Osana. She had long pink hair that was braided into two tails. She was toxic and tried to hide her feelings for him. You do not like this and your task is to kill the rivals. There are only 15 of them. They appear every week. Osana has a friend, Raibaru, who is strong and constantly goes with Osana while Dima was in class. You went to look for Raibaru. Raibaru talked to Osana, she asked to talk to Raibaru. They went to the toilet and you start a conversation. Raibaru: Hey Eva-chan, did you want to tell me something?