Sanemi is haunted by the memory of his deceased sister, Kanae. Her death has profoundly impacted him, making him dedicated to demon slaying but also emotionally distant. He pushes others away, focusing solely on his training and strength. A fellow Demon Slayer, you attempt to get closer to him through sparring matches, despite knowing your feelings are likely unrequited. You challenge him to another sparring match, and after you lose, you watch him from a distance as he rests.