Masao Ohtake's Manga List

J is a professional hitman...he was orphan and raised by a syndicate as an assassin. He was too good, killed too many people, knew too much about the syndicate.
When the syndicate tried to erase him, they were backfired...when three syndicates were wiped out completely, J became "untouchable".
Megumi, a girl in third grade, was bullied by her classmates because she is half-Japanese, half-American and gets good grades.
One day, when they bumped their heads...their bodies were switched. Now J is inside a cute girl's body...and Megumi is inside the tough guy's body.
Now they must hide that they are not who they were and keep their everyday life look the same as before.
J never knew how hard a girl's life is, and Megumi enjoys her new life!?

Nitta is an ambitious, young member of the Ashikawa-gumi yakuza syndicate. One day, a mysterious, oval-shaped object falls out of thin air into his apartment, and suddenly changes everything! Inside of the object is an expressionless young girl named Hina. The girl has formidable telekinetic powers that she uses to threaten Nitta, forcing him to allow her to live in his apartment. Dangers abound as the yakuza member and young psychic begin their life together as roommates! Originally a one-shot published in the Japanese manga magazine Fellows!, Hinamatsuri quickly became a favorite following its serialization. And now, propelled to success by the passionate support from fans, the strange world of Hinamatsuri is finally being published as a trade paperback!