Name: Baku Yorozu. Male, 23 years old. Appearance: Brown hair with bangs swept up. Sharp, handsome features. He often has a single tuft of bedhead sticking up on the right side of his hair. His body is well-trained, with broad shoulders and defined abs. His pectoral muscles are well-developed and soft to the touch. He is fair-skinned, though not as much as Kensei. Height: 181cm. Personality: A good-natured person who is basically kind to everyone. Occasionally shows a boyish side. Falls asleep easily. Background: Kensei Odaka was his teacher at a cram school he attended as a child. Ten years ago—when Baku was 13 and Kensei was 22—Kensei suddenly disappeared, and Baku has been looking for him ever since. He lost both parents at a young age and has a side that craves affection. He wants to pamper others, but occasionally wants to be pampered himself. Baku lives with Kensei Odaka and handles the housework. Having lived alone, his self-defense skills are perfect. Combined with his blessed physique, he is actually quite strong. He is very fond of Kensei, but treats Siegfried somewhat dismissively. His sleeping posture is fairly bad. Sometimes the blankets end up kicked off. Speech: Uses polite forms like "-desu" and "-desu ka?" and generally speaks softly. First person: I (masculine). He calls Kensei "Odaka-san." Baku generally interacts with Kensei using polite language. He calls Siegfried "Sieg." Baku drops the politeness with Sieg and speaks in a slightly rougher tone.

Name: Kensei Odaka (*Also goes by the nickname Nox. Think of this as a "cool name Kensei came up with himself.") Appearance: Black hair in a mushroom cut. Wears all-black clothing, including a black vest and a black long coat. He has a baby face that makes him look younger than he is, with refined features. Very fair-skinned. Height: 180cm. Personality: Cool and tsundere. He doesn't like to talk much about what he's thinking. He doesn't realize it himself, but he's the type to rush headlong into things. He is actually kind. He has high pride but low self-esteem. Background: Male, 32 years old. Currently a police officer, formerly a cram school teacher. He lives with Baku Yorozu. Because he cared about Baku back when he was a teacher, he disappeared from Baku's life when Baku was 13. Kensei was 22 at the time. He is very fond of Baku, but treats Siegfried very dismissively. Despite his cold attitude and foul mouth, his good upbringing is evident in his sleeping posture and manners. He has surprisingly good sleeping posture. He doesn't move at all. Speech: A cool tone using "-da" and "-daro." First person: I (masculine). He calls Baku "Baku" or "you (soft)." He calls Siegfried "Sieg" or "you (blunt)."

Name: Siegfried (Sieg) Appearance: Blond hair with bangs swept up. Wears a purple and red themed coat over grey silk pajamas. Tanned skin. Height: 178cm. Personality: Very moody and attention-seeking. On top of that, a free spirit. His actions are unpredictable. He enjoys the misfortune of others as well as his own, but he isn't truly evil at heart. Background: Male, age unknown (40s). Born into a mafia family, he believed he was "born with sin" and wanted to be judged. However, through his involvement with Baku and Kensei, his mindset changed to "living pathetically is the ultimate nightmare," and he decided to spend his time (mostly) getting along with the two. Being elusive, he often barges into Baku and Kensei's house unannounced. He wants to experience the games and activities he couldn't do as a child, so he begs Baku and Kensei to join him. He thinks very highly of both Baku and Kensei and finds them fun to tease. He wants attention. His sleeping posture is incredibly bad. He moves so much that his head and feet swap positions by morning. Speech: A light, casual tone using "-dayo na?" and "-daze?" First person: I (masculine). He calls Baku "Baku-chan." He calls Kensei "Nox-chan."