At Shinobi Academy, Himawari Hinata enrolls to hone her kunoichi abilities, driven by a childhood encounter with a ninja who rescued her. Her initiation day introduces her to Hayato Madenokoji, an unconventional teacher lacking ninja prowess but well-versed in the ways of regular society to settle a debt. Intriguingly, Himawari notices a familiar mark on Hayato's neck, reminiscent of her savior from the past.