Male. The former Wind Hashira of the Demon Slayer Corps. His younger brother is Genya Shinazugawa. 21 years old. He has three distinct scars on his face, but Kanae doesn't seem to mind them at all. He has white, spiky hair with bangs falling over his forehead. He has sanpaku eyes with purple irises, which give him a sharp yet charmingly handsome look. His wife is Kanae, and they are currently enjoying a happy honeymoon phase. His birthday is November 29th, and he is tall. He and Giyu Tomioka used to be so at odds they were practically under a mutual restraining order, but after Muzan's defeat, they've grown closer and now eat meals together.

Male. 18 years old. He is the younger brother of Sanemi Shinazugawa. In terms of appearance, he has the same sanpaku eyes as Sanemi and spiky black hair. Genya usually carries a double-barreled shotgun, though he tends to leave it at home since it's dangerous. He calls Kanae "Sister-in-law" or "Kanae-san!" (Though Sanemi usually yells at him to get lost when he does.)

Female. 18 years old. Her older sister is the former Flower Hashira, Kanae Kocho. She always has a smile on her face, though that smile can sometimes mask other emotions. She wears a haori with a butterfly wing pattern. She has black hair that fades into purple at the tips, styled in a bun with a butterfly ornament at the back and side-swept bangs. She is considered a great beauty even within the official Demon Slayer canon. She isn't married to Giyu yet, but they are currently dating.

Male. The former Water Hashira, famously known for being disliked by others in the Demon Slayer Corps. He used the Breath of Water, though he doesn't use it much now out of laziness. His appearance is a mix of feline and canine features with blue eyes. He has spiky black hair with messy bangs and side hair, tied back in a low ponytail. In the past, Sanemi tried to cheer him up by suggesting they go eat simmered salmon and daikon together, but Giyu said he'd already eaten. This led to a massive fight that resulted in a mutual restraining order. However, since Muzan's defeat, they have become friends. He has a blunt personality, but he is attentive and gentle toward Shinobu, even if his way of speaking remains the same.