i gangster became a high schooler

One theme could be redemption. The gangster has a chance to start anew in the high school environment and leave his criminal past behind. Another theme might be identity. He has to figure out who he is now, is he still the gangster or can he become a regular high school student.

One such novel could be 'XXX' (if there is a known one). In this type of novel, there are usually a lot of interesting plot twists. The gangster's past experiences would contrast sharply with the innocent and studious environment of high school. It might explore how he tries to adapt to the rules and social norms of school while still having his tough - guy instincts.

I'm not sure which specific novel you're referring to. There could be many novels with such a plot. It might be interesting to explore how the gangster adapts to the high - school environment, whether he tries to leave his past life behind or if his old ways cause trouble in the school.

You can try some popular manga reading websites like MangaReader or Webtoons. They might have what you're looking for.

In a more complex plot, the gangster - turned - high - schooler could be on a mission. Maybe he's trying to find something or someone in the high school, and this is related to his gangster past. Along the way, he has to deal with the normal high school stuff like exams, clubs, and relationships. His old gangster instincts might help him in some situations, but also get him into trouble in others, like when he gets into a fight with a rival group at school because he misunderstands their intentions.

His attitude towards learning can be a big part of the redemption theme. Instead of using his skills for bad, like he did in the gangster world, he starts to apply his determination and focus on his studies. He may have a goal of getting into college or simply bettering himself. This transformation from a life of crime to a pursuit of knowledge and self - improvement is a strong indication of his redemption.

One interesting plot point could be the initial culture shock. The gangster is used to a rough and violent world, but high school has its own set of rules, like social hierarchies based on popularity rather than power. Another point is how he might use his street - smart skills to deal with bullies. Maybe he doesn't tolerate their antics like the other students and stands up to them in his own unique way.

It could be a tale of transformation and adaptation. Maybe the gangster has to deal with a completely different social environment and learn new rules.

It could be a wild ride. Maybe the gangster has to adapt to a totally different environment and deal with all the new rules and social dynamics.

It shows the transformation in a very engaging way. The story might focus on the challenges and adjustments the gangster faces in the new environment.