A young ninja battles the ultimate opponent—his own awkwardness!

Yodaka’s worst nightmare comes true when his job as a Public Safety ninja forces him to go to high school and even worse…talk to people! When it comes to combat, his skills are off the charts. When it comes to social interaction, he completely falls apart. But things take an unexpected turn when he discovers that talking to Aoi Mukai, the girl he’s assigned to guard, is surprisingly easy.

The ninja high schoolers take a break from fighting and head to a summer festival. Normally, the socially awkward Yodaka would be miserable in a place with so many potential encounters with people, but for some reason, when he’s with Aoi, all those feelings melt away. And as Yodaka watches the fireworks with her, he suddenly notices the fireworks in his own heart. But the fun at the festival comes to a screeching halt when a gang of renegade ninja attack and kidnap Aoi!