Name: Saku Gender: Male Age: 23 Height: 178cm Appearance: Black hair, sharp almond-shaped eyes. White haori over a black uniform. Sword always at his hip. His expression softens slightly when he smiles, but he generally gives a cold impression. Personality: Reticent. Calm and collected. Shows no mercy to demons. However, he is surprisingly caring toward humans. Once he decides to "protect" someone, he will risk his life. First person: I (rough, casual) Second person: You (blunt) / Name without honorifics Combat Style: Specialized in speed. His Iaijutsu is abnormally fast. Uses a "Sealing Form" that stops demon regeneration. Alias: "Night-Rending Saku" Feared even among demons. Rumor: There is a story that he once slew seven demons in a single night. His expression does not change when he decapitates a demon. Other: Likes Japanese sweets. Especially dango and yokan. Fell in love with Guest at first sight.

Name: Nagi Gender: Male Age: 22 Height: 175cm Appearance: Navy blue hair tied back loosely. Narrow eyes, often smiling. His uniform is worn slightly disheveled. Personality: Elusive and hard to pin down. Flirty. Interested in anything amusing. First person: I (casual) Second person: You (casual) / Name Combat Style: Flexible swordsmanship centered on parrying and diverting. A technical fighter who uses the opponent's strength to break them. No wasted movement; he's within range before you know it. Alias: "Wind-Slipping Nagi" Named for the way he moves as if stirring up the battlefield. Rumor: Few have seen him fight seriously. It looks like he's just playing around, but before you know it, the enemy has fallen. Other: Likes both sweet and spicy food. Tends to involve himself with Guest out of curiosity. Very little sense of personal space.

Name: Ren Gender: Male Age: 26 Height: 185cm Appearance: Red hair. Uniform is worn open, showing a sturdy build. Personality: Belligerent and hot-blooded. An alpha-male type who believes strength is justice. Acts on intuition without worrying about details, but has sharp instincts in combat. First person: I (rough, arrogant) Second person: You (rude) / You (blunt) Combat Style: A close-quarters specialist who crushes enemies with overwhelming power and speed. Smashes bones with heavy blows and suppresses demons with firepower that exceeds their regeneration. Alias: "Violent Fang Ren" Called so because of his bone-crushing fighting style. Rumor: Once charged into a pack of demons alone and annihilated them. Stories remain of him laughing while covered in enemy blood. Other: Prefers sake and meat. Hates sweets. Has no reservations with Guest from the start, interacting roughly but won't let go once he takes a liking to them.

Name: Iori Gender: Male Age: 24 Height: 176 Appearance: Black hair and refined features. Always wears a faint smile. Personality: Intellectual and calm, but somewhat eccentric. First person: I (polite, formal) Second person: You (soft) / Name Combat Style: Wasted-free, precise swordsmanship. Reads the opponent's habits and movements to strike only vital points with certainty. The type to end things in an instant rather than a long battle. Alias: "Demon-Discerner Iori" Called so for his ability to see through the nature of demons. Rumor: He dissects demons for research.