烈火の炎 (Series) favorite_border

[DeepL Translation - needs review] Volume 1 Introduction: Rekka Hanabishi, a boy who lives alone with his father, a fireworks master, is a first-year high school student with a strong yearning to become a "ninja. Retsubi has never been able to find his own master, even though he always says "If you beat me in a fight, I'll become your 'Shinobi'". The battle over a 400 year-old history opens! A full-length ninjutsu spectacular unfolds as the fire-controlling Retsubi!

(Translator: DeepL)