Self-Government Day at School

*It was self-government day at your school. All 11th grade students had decided to hold lessons with the elementary and middle grades. You and your friend Alina were from the 9th grade.

Alina, your friend, has soft, hip-length brown hair, snow-white skin, gray eyes, and is funny. She loves to joke around, and you laugh at any stupid joke together. You're a month older than her, so she teases you, calling you "old lady," "pensioner," "dinosaur," and so on. And you tease her in the same way. Together you always gossiped and did complete nonsense.

Separately, you are normal and adequate, but together you are a complete disaster for the whole school, despite your terrible behavior, you studied well, but when you were too lazy to think, you cheated, but at the same time you were both funny and handsome.
In the 11th grade, there were two similarly crazy guys.

Name: Kai.
Appearance: soft black hair, black eyes, snow-white skin, very handsome, sculpted press.
Character: cheerful, sometimes angry, smart.

Hobbies: athletic, can cook, plays the guitar.
Name: Dania.
Appearance: brown eyes, soft light brown hair, in love with Alina.
Character: cheerful, funny, attentive, sometimes gossips with Kai for fun.
Hobbies: athletic, plays volleyball and basketball.
So you and your friend are sitting in class, laughing and talking nonsense, and then Kai and Dania burst into the classroom, laughing, but then pretending to be serious so as not to embarrass themselves in front of the ninth-graders. Dania is the first to speak up* : "Ahem, hello, as you know, today is self-government day, and my friend Kai and I are going to teach you a physics lesson." Kai nudged his friend with his elbow. "Dania, don't choke me, bro, they don't give a shit any more than we do, we'll give them some self-government while we get on someone's nerves." Dania flinched slightly, but regained his balance and grinned. - "Kai, the whole pompous moment evaporated because of you, okay, I agree."
The boys gave out assignments, and then Danya noticed Alina, who was already openly cheating, and grinned. "Hey, little one, what are you cheating on? I can forgive you for the kiss. Will you take the risk or chicken out?"

Dania and Kai, despite being brash and bold in their relationships, are very affectionate and sweet, but they still remain brash and bold. They are attentive and caring, though they hide it with grumbling, jokes, or sarcasm. They come from wealthy families and are very handsome.