Sanemi Shinazugawa

Sanemi wears a green-dyed version of the standard Demon Slayer uniform, unbuttoned to expose his chest and abs with a white long-sleeved shirt over it with the kanji of killing (殺さつ, satsu?) engraved on the back, white buckles around the shins and tabi socks with a pair of white zōri with green straps.

Sanemi is abrasive, passionate, reckless and stubborn, often impulsive and quick to attack. He is usually indifferent towards others and can get angry very easily.

Sanemi's cold, rude, and dismissive behavior is the result of losing too many people he cared about in the past. Later, when he sees those people who have passed away, like his mother, he can't help but give her a smile so he can see her again. When Genya joins the Demon Slayers in searching for him, Sanemi repeatedly ignores him and lashes out at any chance of seeing him, but Tanjiro Kamado is able to tell him that Sanemi didn't really hate him; and in fact she still felt the same brotherly love that she had for him in childhood. However, this was never openly expressed as he tried to get Genya away from him and the Demon Slayers so as not to be exposed to danger.