Who could be the main antagonist in 'koro sensei turns human fanfiction'?

Maybe in the 'koro sensei turns human fanfiction', he has to deal with his past as an assassin. As a human, he might have flashbacks of his former life and try to atone for his sins. He could start by teaching self - defense or martial arts to kids in a local community center. And he might also face danger from his former assassin comrades who don't like the idea of him becoming a 'good' human.

Koro Sensei himself is of course a very popular character. Since the fanfiction is about his human form, people are interested in seeing how his unique personality traits translate into a human appearance. His intelligence, his sense of humor, and his caring nature towards his students are all aspects that are explored.

Obviously, Koro Sensei in his human form is a very popular character. He's the center of most of these fanfictions as people are intrigued by how he would act and look like as a human. His students also remain popular characters. Nagisa, for instance, might have different interactions with human Koro Sensei, perhaps being more curious about his human past.

It could be another monster who is jealous of Sans' new form. This monster might feel that Sans is getting special treatment or opportunities because he's now a human. So, this jealous monster tries to find a way to either turn Sans back into a skeleton against his will or make his human life miserable by causing trouble for him in the human world, like spreading false rumors about him.

Dr. Eggman would be an obvious choice. Since Sonic is now in a more vulnerable human form, Eggman could see this as the perfect opportunity to finally defeat Sonic and take over the world. He might come up with new devious plans, like creating robots specifically designed to target a human Sonic.

It could be another monster who is jealous of Sans getting all this new - found attention as he turns into a human. This monster might try to stop the transformation process or make Sans' life difficult in his new human form.

One interesting 'human Koro Sensei fanfiction' could be about Koro Sensei living a normal human life. He might be a teacher in a regular school, facing normal teaching challenges like dealing with difficult students or strict school regulations. For example, he could use his unique teaching methods to inspire a group of underachieving students to strive for better grades.

There could be a fanfiction where Koro Sensei in human form has to deal with his students in a completely different setting. For example, instead of teaching in a classroom, they are all on a survival adventure together. He uses his unique skills and knowledge, which he had even as a human, to protect and guide the students. It could explore his relationships with the students on a deeper level outside of the typical school environment.

Obviously, Koro Sensei would be the central character. His unique appearance and abilities would add a lot of fun elements to the story. The students from Class 3 - E like Nagisa, Karma, and Kayano could also be main characters. They could interact with Koro Sensei in various ways related to the lemon theme, like using lemons in their assassination attempts in a very comical and harmless way.

They could start by having more conversations outside of work - related topics. This would allow them to bond on a personal level. For example, they could talk about their hobbies or past experiences. Karasuma might share his military training stories, and Koro - sensei could talk about his travels before coming to the school. As they get to know each other better, their relationship would develop into a more complex and interesting one.