NEPHYLYM GN (2025)

"(W) Taro Achi (W/A) Sai Madara Mamoru Kagemori is a dull high school boy who's not handsome, athletic, or intelligent. Or so he seems. He is actually the eldest son of the 400-year-old Ninja clan specializing in protecting their neighbors, the Konnyakus. And the object of Mamoru's protection is none other than their only daughter, Yuna Konnyaku, a natural born troublemaker. Mamoru must continue to protect her to carry out his duty no matter what adversaries strong, bizarre, or stupid. And will Yuna ever learn who her protector is?"