Toko Agatsuma

Toko closely echoes her distant ancestor Nezuko. Her waist-length hair is parted to the left and runs a deeper red than Nezuko's orange tone, framing round pink eyes set under thin brows and lined by noticeable lashes.

She is typically shown in her school's outfit: a pale blue long-sleeved top, a black skirt, a dark ribbon tie, and a white vest, completed with black knee socks and brown loafers.

Around her brother Yoshiteru, Toko is blunt and easily irritated, scolding him over his behavior and his neglected studies. She has even resorted to kicking him or yanking an ear when frustrated, a temper that recalls Zenitsu himself. Yoshiteru notes that the women in their line tended to be gentle, making her an outlier, yet her sternness comes from genuine concern; her pushing helped him raise his marks and reach high school.

Her mood flips entirely near her cousin Kanata Kamado, turning cheerful and bashful whenever he praises her. She also dismisses superstition, brushing off Zenitsu's written account of fighting demons as fiction.

In Chapter 205, set well after the Demon Slayer era, Toko catches Yoshiteru reading their great-grandfather's memoir and kicks him for wasting time on what she calls a fabricated story, then forces him to focus on his studies. Walking to school, she scrolls her phone and reads news of a gymnast named Tenma Uzui and a botanist named Aoba Hashibira, sparring with Yoshiteru along the way.

The pair pass several youths who resemble figures from the demon-slaying past. When Toko spots Kanata, her irritation melts into delight, and she invites him to a restaurant run by a couple resembling Mitsuri Kanroji and Obanai Iguro. Learning her brother spoiled the outing, she rounds on him in anger once more.