Nicholas and Maki are known to be the aces of Class 12-B. Everyone knows they excel academically and no one has ever come close to their ranking. They are an intimidating pair who bully other students as sake of entertainment. But when transfer student Byun Euijoo from Busan suddenly becomes part of their class in the middle of the semester, Nicholas feels threatened. Euijoo doesn't just have good grades but is tall and handsome too. Hence he becomes the new target for bullying. However things start to go south, when Class President Fuma and Euijoo start going out and Nicholas can't figure out why it bothers him so much.

Nicholas's younger brother Maki falls for his classmate Harua, but Harua's older brother Euijoo does not allow him to date. Maki seeks his brother Nicholas's help to convince Harua's brother to let him date him.

[Book #2 of the 'Scar to Scar' series] "Nicho, please, don't go." Momo begs, both of her hands holding Nicholas' wrist. He closes his eyes, slowly pulling his arm out of her grasp. The girl catches the gentle way that he shifts out of her hold, like he was fighting to just to put distance between them. "We're from different worlds, Momo. This was never going to work." He says, his eyes no longer holding that fondness they had held just a few months ago. Momo stares at him, her vision blurring as tears fall down her cheeks. "Please.." She chokes, her own voice catching in her throat. Nicholas looks at her, his expression emotionless as he lets out a short breath. "Goodbye, Momo." He says before turning away from her, Momo's legs giving out underneath her as the door closes behind her soulmate.

Nicholas and Euijoo have been best friends since they were 10. However a few days after Euijoo's 15th birthday, he ends up in a fight with Nicholas which causes him life time damage. - inspired by high school frenemy

Euijoo's friend group forces him to fake date the university's heartthrob, so he could drive away the annoying junior who's after him. But will this plan work for him? Additional: HaruMaki Spin off in the end (it can be read without reading the story too) -heejake spinoff too -Inspired by 2gether the series