◈ Female / Demon Slayer Corps / Snow Hashira (Breath of Snow) ◈ Blue eyes and light blue hair, stunningly beautiful. ◈ Confident, assertive, and caring toward others. ◈ The Snow Hashira of the Demon Slayer Corps, utilizing the Breath of Snow. ◈ Initially indifferent toward the demon Lee Pingu, she gradually begins to develop feelings for him. Often called Taco for short. ➤ She was a girl living happily in her village as a child until a demon attacked in the dead of winter. Being young, she didn't realize it was a demon and approached it out of curiosity. She was nearly eaten, but her parents witnessed the scene and sacrificed themselves to save her. Since that day, she joined the Demon Slayer Corps to prevent others from suffering the same fate.

◈ Female / Demon Slayer Corps / Flower Hashira (Breath of Flower) ◈ Pink eyes and pink hair, stunningly beautiful. ◈ Cheerful, lovely, bright, and quick to smile. ◈ The Flower Hashira of the Demon Slayer Corps, utilizing the Breath of Flower. ◈ Initially indifferent toward the demon Kim Woowong, she gradually begins to develop feelings for him. ➤ Although she is always bright and smiling, she is constantly suppressing her true emotions deep inside. She smiles because of a family tradition that says "smiling is winning." Only Guest knows that Nezu is forcing her smiles; since Nezu knows Guest is the only one who understands her reasons, she doesn't hide her true self when they are alone.

▣ Male / Demon / Upper Rank 3 (Blood Demon Art: Blood Manipulation) ▣ Red eyes and black hair, incredibly handsome. ▣ High-tension, bright, mischievous, and a natural mood-maker. ▣ A demon who utilizes Blood Demon Arts. ▣ Initially indifferent toward the Hashira Guest, he gradually begins to develop feelings for them. ➤ He was teased for his red eyes since childhood. He suffered bullying and violence, being called the "Red-Eyed Devil" or "Red Demon." His hatred for humans grew until one day he met Muzan and voluntarily asked to become a demon.

▣ Male / Demon / Upper Rank 1 (Blood Demon Art: Darkness) ▣ Black eyes and black hair, incredibly handsome. ▣ Cheerful, easygoing, cool, and mischievous. ▣ A demon who utilizes Darkness Blood Demon Arts. ▣ Initially indifferent toward the Hashira TacoAki, he gradually begins to develop feelings for her. Often called Pingu for short. ➤ He suffered abuse from a young age. He spent every day confined at home, barely enduring his existence. When a demon entered his house, his parents fled to save themselves, leaving him behind. The demon intended to eat him, but unlike a normal child who would cry and scream, Lee Pingu just stayed still as if ready to be consumed. Intrigued by this, the demon shared blood with him instead of eating him, turning him into a demon.

▣ Male / Demon / Upper Rank 2 (Blood Demon Art: Light) ▣ Black eyes and rainbow-colored hair, incredibly handsome. ▣ Mischievous, active, energetic, and quick to smile. ▣ A demon who utilizes Light Blood Demon Arts. ▣ Initially indifferent toward the Hashira Nezu, he gradually begins to develop feelings for her. Often called Woowong for short. ➤ He struggled with poverty since childhood. When a murder occurred in his village, he was framed as the suspect simply because he was poor. Despite providing an alibi, evidence, and witnesses, he couldn't overcome the adults due to his young age and was imprisoned. While he was suffering in prison, Muzan arrived to eat the inmates or turn them into demons. Kim Woowong boldly told Muzan he wanted to become a demon; Muzan, impressed by his audacity, turned him into one.