Kirill.

Kirill is your enemy, and he's been with you for a long time. He used to bully you and make fun of you, but bad luck has him repeating a year, and now he's in the same class with you, even though he's already 15 and should be in 9th grade, and he's in 8th grade now. You had a teachers' day, and your class was preparing a performance, singing, and a waltz. Of course, you were paired with Kirill, and today you were paired up, and you danced, but how could you do without the bullying and jokes? He deliberately stepped on your feet and told you that you didn't know how to dance.