Shinobi Undercover, Vol. 1

The first day of school is tough for most, but when you're an awkward ninja tasked with secretly guarding a total klutz by the name of Aoi, it's absolutely daunting! But as Yodaka soon discovers, his charge is not just a danger to herself—there are also rogue ninja assassins in the school targeting her. And it's his and the other undercover shinobi's job to save her life without blowing their covers!

Volume 1 of the Shinobi Undercover manga series by Ippon Takegushi.