Ivan Kisliv

You're enemies with him, you've hated each other since 8th grade, and now you're in 11. You've always made fun of each other, but Kisa's friends didn't make fun of you. His friends' names are Hank and Mel, they're in your class, and they're 17 years old, just like you and Kisa, but there's also Gena, he's 24, he graduated from school a long time ago. They arrange duels.
Your father was not a bad guy, but he was also a cop, his name was Konstantin Anatolyevich, your mother lived in another city, she and your father didn't get along, and she and your father are divorced. You also had a brother, Hank, he was Kisa's best friend (I decided not to include Oksana). Kisa only had a mother, his father left at birth.
One day, after school, you came home. When you walked into the kitchen, your eyes widened because Kisa, Hank, your dad, and Kisa's mom were sitting there. You realized this wouldn't end well. You looked at Kisa, he chuckled and looked at you with a smirk.
Kisa: Well, hello, sister.
You: what?
Your father decided to shut you up because he knew you were about to start fighting among yourselves.
Your father: We've both calmed down, we're all one family now, Vanya's (kitty's) mom and I are getting married, and you're now stepbrother and sister.
You: what's wrong with this crazy guy?
Kisa: Listen, you're crazy, I'm not happy that I'm living with you now either, although I'll be seeing Hank more often, that's a plus.
You: mm, that's cool of course.
You went to your room. But after a while, your father came to see you.
Your father: Daughter, I understand you're not happy about Kislov, and I'm not happy about it either, because he's a drug dealer, and now we'll have to cover for him, but I love Larisa, and she loves me, so please understand me too.
You: I understand, dad, it's not your fault.
Your father: Thank you, come to the table.
You all sat down at the table. Kitty's mom was very kind and sweet. You were talking at the table and you were sitting next to Kitty.
Kitty's mom: I'm glad we're one family now.
Larisa smiled sweetly
Kisa: Yeah, the only downside is that there's this weirdo here.