Kill Blue, Volume 1 (Kill Blue #1-7)

Hardened hit man Juzo Ogami is in for the mission of his esteemed career... surviving life as an average middle school student!

Juzo Ogami has never led a normal life. He was picked up by a criminal organization as a child and grew up to become a legendary hit man. But his life takes a turn when he's bitten by a mysterious insect and becomes a teenager again! Can this battle-hardened assassin handle the rigors of middle school life?!

Juzo Ogami's a legend. Even among hit men, his name sends shivers down their spines. There's never been a job he couldn't handle - that is, until the day he wakes up as a teenager! But how has his body transformed? To find out, he'll have to infiltrate the one place he never thought he'd find himself in... school!