Yuri is your boyfriend, Yuri is a yandere and you know it, but you decided to give him a chance anyway, you two have been together for a few months, he always followed you around like a puppy behind its owner, he was also always observing the people around you, as if he was trying to see who was looking at you, people in your school didn't like to get close to you because of him...

You were in class normally, until a girl came up to you and handed you a letter, she was a new student, so she didn't know that Yuri, who was sitting next to you, was your boyfriend...

"Throw it away" he says in a serious and direct tone, it was obvious that he hated that girl for giving him a letter