キルアオ

Juzo Ogami, a 39-year-old hitman for the assassin syndicate Z.O.O., is stung by a genetically engineered wasp after a job and wakes up in the body of a 13-year-old. His boss puts the new body to work at once: Ogami enrolls at Rikka Private Middle School to make sure it is safe for the boss's daughter. The ordinary schooling he never had turns out to be a joy, and his classmate Noren Mitsuoka, heiress to Mitsuoka Pharmaceuticals, may be the key to turning him back.