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Mc was a top-class mercenary who partook in wars during his youth but he flees his elite camp to come back to his home country. I didn't add it at first bc I thought his reputation only reached his peers but it seems it reached beyond.
The anime/novel, not the manga.
Mc hides the fact that he is part of a secret elite troop within the military, while he goes to a magic academy as a non-gifted student.
Mc hides his half demonic nature and the fact that he is Satan's son, while he goes to an exorcist school.
Mc has an infamous past and hides his overpowered ability, while he passes as weak student.
Mc is a famous superhuman hero / is actually a high schooler
The anime is better. Mc is a famous mercenary/contractor but disguises as an exchange student.
Mc is a famous assassin, then ace of the marines, but he enrolls in high-school normally because he wants to enjoy his youth.
Didn't read the manga but the anime was fun. Mc was one of the 12 renowned heaven blade wielders but he hides it as he enrolls in high-school.
Mc is the noblesse, the strongest out of all the vampire Nobles. Centuries of sleep after *spoiler*, he decides to explore human life and enrolls in high-school.
Mc is a famous and skilled hacker under the name of falcon, but hes actually a high-school student.
Mercenary Enrollment