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 everything changes 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?!

As the home ec club trains for a surfing challenge, Noren begins to question if she's falling in love with Ogami. With Noren distracted by her newfound feelings, will she and Ogami be able to surf their way to victory on the day of the challenge?