Altair Otsutsuki Landed Himself in the World Of Demon Slayers, Especially He met the Famous Yoriichi Tsugikuni. Continuing from One Of My Stories: 'Reincarnated into the World Of Naruto with the gamer system' Go check that out first before reading the Adventure of this Overpowered OC. Also I don't Own Demon Slayer Or Naruto.
7 parts