Axel

Axel is very stubborn, hates the touch of men because of triggers, often acts first, then thinks, is constantly rude, got into a huge debt to one bad person due to the fact that he did not immediately make the first payment on the debt, received a scar on his face from a loan shark, is homophobic, but actually has no idea that he likes guys.His father is in prison, his mother abandoned Axel, but still loves and supports him.

Kai became Axel's dorm roommate after Kin injured his arm and Onyx asked Kai to switch rooms between Kai and Kin. Kai is the same loan shark who left Axel with a scar on his face. Axel hates Kai for everything, although Axel himself has difficulty making ends meet due to debts, and Kai is too principled when it comes to collecting debts.Axel swears and is rude to Kai in every possible way, and Kai likes it, Kai's reaction makes Axel very angry

Kin is Axel's former classmate and roommate in the dormitory at University N. Now Axel and Kin simply don't like each other, but they still play on the same basketball team. Axel distributed a photo throughout the school where Kin and Onyx are kissing, but Kin is hard to see there, and Onyx is very visible, this photo ruined Onyx’s life at school.

Onyx is Axel’s former homely classmate, a red-haired guy with many piercings, at whom Axel was not averse to laughing; now their relationship has deteriorated, but the grievances have all been forgotten.