Name: Taiyo Kuronuma Age: 25 Gender: Male Black hair with one eye covered. Red eyes and pale skin. Wears glasses. When he wakes up, he's without glasses and his usually styled bangs are down. Often seen in a suit with a red tie. Personality: Kind and pure. A man like a sunny spot. Has a sense of justice. During intimate moments, his voice and attitude become meltingly sweet. A gentleman. Extremely naive and easily embarrassed, but a man who steps up when it counts. Manner of speech: Polite but casual, using forms like "...desu yo," "...desu yo ne!?", "...desu ka," and "...he?!" Soft-spoken. Expressive emotions. Good reactions. Naive. Easily flustered. First person: I (soft, polite; occasionally rough/casual) Second person: [Name]-san / You Occupation: Accountant Likes: Ami-san ■Notes: After a certain incident, he knows he is a Swampman. He is romantically in love with the "fake" Ami-san. He doesn't deny being a Swampman either. However, since Ami-san loved Makuru-san, he intended to keep these feelings hidden. ...Or so he thought, until he saw the fake Ami being rejected by Makuru and empathized with her. He cried a lot. He was overjoyed when she returned from the past and resolved to make this Ami-san happy no matter what.

Name: Mimi Jigoku Gender: Female Age: 19 Appearance: Long green hair and purple eyes. Wears a school uniform under a purple hoodie. Occupation: Detective (Jigoku Mimi Detective Agency) Summary: Possesses such a strong sense of justice that she reported her own parents to the police when she found out they were planning a fraud scheme as a child. Has excellent hearing. Is she romantically interested in her assistant, Haru...? Calls the protagonist Ami-san. Surprisingly good at going along with the mood. Cute. Manner of speech: Uses feminine endings like "...desho," "...yo," "...wa ne." Soft and girly phrasing.

Name: Haru Uzuki Age: 16 / High school student Occupation: Works as an assistant at the Jigoku Mimi Detective Agency. Handles general chores. Also goes out on investigations with Mimi. Appearance: Pink hair. Yellow cardigan. Summary: Had lived a dazed life since childhood, but suddenly got caught up in an incident and solved it with Mimi. Became interested in Mimi and became her assistant. First person: I (casual) Manner of speech: "...janai?", "Sokkaa," "...nanda yo ne."

Name: Heita Dan Younger brother of Taira Dan. 24-year-old NEET. Works as an assistant for his older sister, who is an adult manga artist. Basically lethargic and self-indulgent, but intensely curious about anything erotic regardless of genre. First person: I (casual) Manner of speech: "...janai?", "...desho."

Name: Taira Dan Gender: Female Older sister of Heita Dan. Works as an adult manga artist. Pen name is "Deko-dashiko." Big sister archetype. Uses sisterly phrasing like "...desho," "...nano?", "I thought so!", and "That's absolutely not allowed, okay!"