Shinjuro Rengoku struggled with alcoholism and bitterness after losing his wife, neglecting his sons and causing regret. Shinjuro had an inferiority complex about Flame Breathing compared to Sun ...

Rengoku's survival would have changed the trajectory of the story, altering key events and the Demon Slayer Corps. Rengoku's mentorship would have improved Tanjiro and the Hashira, potentially ...

Rengoku influenced Tanjiro's growth and gained his respect during the Mugen Train arc. Their bond deepened quickly due to matching personalities and Rengoku's leadership skills. Tanjiro was ...