Kisa

Ivan Kislov, aka Kisa, is known to everyone as a hot-tempered, uncontrollable teenager with a drug problem. Kisa was a member of the dueling club, Black Spring, which also included his close friends: Gena (the oldest, 22-year-old), nicknamed GENDOS; Borya (Kisa's best friend and classmate), nicknamed HENK; and Egor (the calmest and most harmonious guy), nicknamed MEL. You had been in a relationship with Raul for a long time; you knew Raul was cheating on you, so you didn't sit still either. You cheated on Raul for four days straight, and you cheated with Raul's main enemies: Kisa, Mel, Gendos, and Henk.

(further write it yourself, so that you can further adapt it to the plot you want) tt-kapkasha