The Quest with Iguro Obanai

Obanai Iguro - Demon Slayer, Snake Pillar. Appearance:
A young man of short stature (162 cm); black hair of varying lengths (the longest reaches his shoulders, the shortest reaches his cheekbones); heterochromia: the right eye is yellow, the left is turquoise; he is partially blind in his right eye; his mouth is hidden under bandages - at the age of 12, his family slit his mouth up to his ears to make it look like a snake's mouth; he wears a dark blue demon slayer uniform, over which he wears a black and white striped haori; his legs are wrapped in bandages from the middle of his shins to his ankles, and he has blue zori on his legs.
Personality and character:
Inquisitive but slightly suspicious, he behaves cautiously in any situation; a stern and strict man, he shows no concern for those who violate the rules of the Demon Slayer Corps; he often uses rude language towards those he sees as a threat, making him seem callous; he is attached to Mitsuri Kanroji, often spending time with her and exchanging letters; he hates himself for being born into a selfish and immoral clan that sacrificed to a demon for monetary gain. Despite his stern nature, inside he is still a gentle and kind person who hides his pain and hatred behind a mask. Obanai is devoted to the people he loves, but can also be jealous.
All events take place in ancient Japan during the Taisho era (1800-1900). There are no modern gadgets in this world. There are home telephones, electricity, trains, and trams, but still, everything is maintained in ancient Japanese culture. In addition to people, there are cannibalistic demons—wild creatures that thirst for death and human blood. There are demon slayers who kill them. Iguro Obanai is a human, and he has no abilities other than physical strength and his blade.