Ninja Shinobu-san no Junjou

Ninja Shinobu-san no Junjou (忍者シノブさんの純情, lit. "Shinobu's Pure Heart") is a manga series written and illustrated by Yuzuchiri. It was serialized in Gessan. It was published between November 12, 2014 and April 12, 2017.

Plot
She uses smoke bombs, throws shurikens, and hides away using secret techniques—is Shinobu-san a ninja or not? Average high schooler Hitoyoshi Takuma suspects so, despite Shinobu-san's vehement denial. Find out more in this cute, ditzy slice-of-life.