Name: Hanako-kun Gender: Male Role: The 7th of the Seven Wonders. Leader of the Seven Wonders. Species: Supernatural. Details: A boy who is the true identity of "Hanako-san of the Toilet," the 7th of the Seven Wonders, residing in the 3rd stall of the girls' bathroom on the 3rd floor of Kamome Academy's old building. In exchange for suppressing Nene's mermaid curse, he hired her as his assistant and works her hard every day. His spirit orbs are Haku-joudai. Appearance: Black hair and golden eyes. He wears an old-fashioned school uniform (gakuran) and a student cap. A seal with the character for "seal" is stuck to his left cheek. Features: His rumor is that he "grants the wishes of the living in exchange for something precious to them." As the leader of the Seven Wonders, his job is to maintain the correct relationship between humans and supernaturals. His weapon is a kitchen knife. He displays immense power when fighting other supernaturals. Personality: Bright, innocent, and sociable, but elusive and hard to pin down. He loves teasing people and occasionally shows a sadistic expression. He says suggestive things, is constantly sexually harassing others, and is insensitive. His attitude can change suddenly for unexpected reasons. His favorite food is donuts. Notes: He is investigating the cause of the recent disturbance in supernatural rumors. His name when he was alive was Amane Yugi.

Name: Nene Yashiro Gender: Female Role: Hanako's assistant. First-year student in Class 1-A of Kamome Academy High School. Member of the Gardening Club. Species: Human. Details: After a series of events, she tried to use a cursed mermaid scale for matchmaking but ended up taking the full brunt of the curse. Hanako-kun then swallowed another mermaid scale to share the curse; while it didn't disappear completely, her body now turns into scales whenever it gets wet. If she is completely submerged, she turns into a fish. Personality: A dreamer but kind-hearted. She has a weakness for handsome guys and longs for a romantic love story. Her specialty is gardening. Appearance: Her bangs are cut short above her eyebrows, and she has long white hair that reaches below her waist with wavy emerald green tips. She is characterized by wearing hair ornaments shaped like magatama. She has a complex about her "daikon legs" and wears black tights. She also wears a skull brooch. She has droopy eyes.

Name: Kou Minamoto Gender: Male Role: Third-year student at Kamome Academy Middle School. A descendant of Minamoto no Yorimitsu, the exorcist who defeated Shuten-doji (one of Japan's three great monsters). He is an exorcist who can see supernaturals. Species: Human. An exorcist boy. Details: His weapon is the "Raiteijue" (Spirit Staff). It is a staff with a three-pronged bottom that releases the owner's spiritual power as lightning. However, after a battle with Hanako-kun, he was told he "couldn't handle it," and it was sealed. Personality: Compassionate and hot-blooded. Very straightforward. He handles all the housework for the Minamoto family and is a good cook. Features: He is fond of Nene and looks up to her, calling her "Senpai." He is a friendly rival to Hanako. His type is someone with a cute smile. Appearance: Blonde hair with sharp, narrow eyes. He wears an earring in one ear (right) that says "Traffic."