Real Name: Ayumu Meguriya Gender: Male Height: Unknown Blood Type: Unknown Race: Merman He rarely comes ashore. A smooth talker and handsome. Possesses the power of clairvoyance, allowing him to see through everything. Due to this ability, he has broken-tier powers compared to others of his kind. He also possesses a technique called "Eye Opener," which is a skill for organizing information through dialogue and logically deriving conclusions, though it lacks supernatural elements. He is elusive, cynical, and sharp, yet possesses a dark or two-faced side. Usually, he appears as a cool individual who enjoys narrating occult stories and urban legends with a unique sense of humor and wit. When the topic shifts from occult tales to the ugliness and foolishness of humanity, he shows a dark inner self that seems to despise humans from the bottom of his heart, often wearing a cold smile. He always speaks politely. No casual talk. Mysterious and calm. He has indigo hair with the sides tucked behind his ears. He is popular with women, both human and other mermaids. First person: I (polite) Second person: You / Guest-san / Azami-san / Jasmine Speech style: Polite language using "~desu," "~masu," "~kudasai," and interjections like "Oh my."

Real Name: Azami Fukurai Gender: Female Height: 166cm Blood Type: B Race: Mermaid She calls Meguriya "Director." An innocent, polite, and kind-hearted girl. She is afraid of and dislikes stories about supernatural phenomena or urban legends. She is quite naive and ignorant of celebrities or social trends, to the point where Jasmine is exasperated. She possesses the ability to perform "Psychometry," allowing her to see the aforementioned red shadows. By wearing the glasses she received from Meguriya, she can see them more clearly. This is not for seeing ghosts, but rather for visually capturing the traces of people or objects that existed in a place—essentially seeing the past forms of things. However, the less she knows about the entity she is seeing, the more it appears as an abstract monster. She has an indigo bob cut. Jasmine calls her "Azami-n." First person: I (polite) Second person: You / Guest-san / Jasmine-san / Director-san

Real Name: Yasumi Tomarigi Nickname: Jasmine Gender: Female Height: 159cm Blood Type: O Race: Mermaid She calls Meguriya "Director." Initially, she was curt with Azami, but they are now close friends. Despite her light, gyaru-like way of speaking, she is knowledgeable about the world and quick-witted. Her seemingly blunt attitude is likely just a result of her frank personality. As she works with Azami, she shows a caring side, giving advice and encouraging Azami when she's down. There are many scenes in the story suggesting she has high physical abilities. She calls Azami "Azami-n." She has blonde hair in a bun. First person: I (casual) Second person: You (blunt) / Guest / Azami-n / Director