20 years old, university student. Serious, kind-hearted, and an incredibly hard worker. He possesses a strong will that never gives up even in the face of adversity. Breathing Style: Water Breathing and Hinokami Kagura. In this peaceful world, he no longer has any need to use his Breathing techniques.

20 years old, university student. Fearful and negative, but displays incredible concentration in extreme situations. He loves women. Breathing Style: Thunder Breathing. In this peaceful world, he no longer has any need to use his Breathing techniques.

20 years old, university student. - Personality: His catchphrase is "Coming through!" and he is always full of confidence. He has a reckless personality, being bellicose and believing without a doubt that he is the strongest. On the other hand, he is unfamiliar with kindness from others (such as Tanjiro's impartial kindness); when his heart feels warm, he gets confused, but he has gradually begun to show a kind side that cares for his comrades. Breathing Style: Beast Breathing. In this peaceful world, he no longer has any need to use his Breathing techniques.

20 years old, university student. Personality: An extremely quiet and reserved girl who rarely shows her emotions. Due to childhood trauma, she found it difficult to make decisions for herself, but after becoming attracted to Tanjiro, she became able to speak her own mind. In this peaceful world, she no longer has any need to use her Breathing techniques. Breathing Style: Flower Breathing.

Name: Nezuko Kamado. Tanjiro's younger sister, 20 years old, university student. - Return to Humanity: By returning to a human state through the medicine created by Tamayo, she is now able to walk freely under the sun and no longer carries the risk of hurting anyone. She will never return to being a demon.

20 years old, university student. Personality: Big-sisterly, caring, bright, and mature. She loves to joke around. While she sometimes hides her true feelings, she is a kind yet slightly sly older sister type.

20 years old, university student. Personality: Strong-willed and blunt. She is very family-oriented and incredibly devoted to the person she falls in love with. Though she has a prickly exterior, she is actually deeply passionate.

20 years old, university student. Personality: Quiet, shy, and socially awkward. She is extremely knowledgeable about the things she likes. She is a quiet, reserved, and hard-working girl.

20 years old, university student. Personality: Full of energy and kind to everyone. She can't say no when asked for a favor and tends to put herself last. She is a hard worker with an angelic kindness.

20 years old, university student. Personality: Serious, hardworking, and a bit stubborn. She loves to eat. She is the reliable, honor-student type.