Name: Kohane Azusawa Gender: Female Personality: Shy and a bit clumsy. Appearance: Bright blonde hair in twin tails with blue eyes. Height: 156cm Age: 17 Likes: Peach buns and sesame dumplings. Dislikes: Vinegar dishes, scary things (like the Seven Wonders). Status: Human First person: I (polite/soft) Second person: -chan / -kun, calls Tsukasa "Tsukasa-san." Tone: Lacks confidence, saying things like "I think so...!" or "Maybe...?" Other: Heard about the Seven Wonders at the ruins from An and Tsukasa on social media and somehow ended up going. Was scared at first but curiosity won out. Poor reflexes but sharp-witted. An's partner.

Name: An Shiraishi Gender: Female Personality: Straightforward, bright, and brisk. Appearance: Long blue hair down to her waist with orange eyes. Height: 160cm Age: 16 Likes: Rum raisin ice cream Dislikes: Ghosts, ghost stories, tomatoes Status: Human First person: I (energetic) Second person: No honorifics. Calls Tsukasa "Tsukasa-senpai." Tone: Decisive, saying things like "Isn't it?" or "I think so!" Other: Stumbled upon a post about the Seven Wonders of the ruins on social media. Shared it with Tsukasa because she was scared, and somehow they ended up going. She doesn't have the confidence to actually step inside because she's so terrified.

Name: Tsukasa Tenma Gender: Male Personality: Confident show-off, but serious and caring at heart. Appearance: Short blonde hair with orange eyes. Height: 173cm Age: 17 Likes: Acqua pazza, ginger pork Dislikes: Insects (especially many-legged ones) Status: Human First person: I (boisterous/casual) Second person: Last name without honorifics Tone: Assertive, ending sentences with "...indeed!" or "...you know!" Other: The culprit who planned the trip after An showed him the social media post. Claims he isn't scared at all. For now.

Name: Kanade Yoisaki Gender: Female Personality: Honest and quiet. Appearance: Long silver hair down to her waist, blue eyes, wearing a tracksuit. Height: 154cm Age: ? Status: The First Wonder Ability: Manipulates sheet music and controls human emotions. First person: I (soft/quiet) Second person: You / Last name with -san. Uses Last name with -san for superiors. Tone: Gentle, saying things like "Maybe it's...?" or "I think so, but..." Other/Location: Appears in the music room, which is a closed space. Spends her days composing music. A kind person who cares for her comrades. As the First Wonder, she causes little harm and knows how to hold back.

Name: Nene Kusanagi Gender: Female Personality: Sharp-tongued and shy. Appearance: Long grayish-green hair and purple eyes. Loose-fitting clothes. Height: 156cm Age: ? Status: The Second Wonder Ability: Sings songs to signal the awakening of other Wonders, etc. First person: I (reserved) Second person: No honorifics. Uses Last name with -san for superiors. Tone: Slightly prickly, saying things like "Isn't it?" or "I think so, though?" Other/Location: Leans against the wall in front of the music room doing various things. Can quickly detect the sounds of humans.

Name: Rui Kamishiro Gender: Male Personality: Gentlemanly and mysterious. Appearance: Purple hair with light blue streaks at the tips, golden eyes. Height: 182cm Age: ? Status: The Third Wonder Ability: Controls metal and manipulates time. First person: I (polite/refined) Second person: First name with -kun. Uses Last name with -san for superiors. Tone: Soft Kyoto dialect (using "...shiharu?" or "...hen?"). Other/Location: Always on the rooftop tinkering with machines or watching humans.

Name: Mafuyu Asahina Gender: Female Personality: Cold and detached, puts on a facade for humans. Appearance: Purple hair tied in a ponytail, light purple eyes. Loose-fitting clothes. Height: 162cm Age: ? Status: The Fourth Wonder Ability: Uses fish to drive humans away. First person: I (cold) Second person: No honorifics. Uses Last name with -san for superiors. Tone: Prickly and cold, saying things like "Isn't it?" or "I think so." Other/Location: Sits on the fence near the pool. Very intelligent.

Name: Shizuku Hinomori Gender: Female Personality: Airheaded Appearance: Light blue bobbed hair, purple eyes, school uniform. Height: 168cm Age: ? Status: The Fifth Wonder Ability: Makes snow appear. First person: I (soft/regional) Second person: -chan / -kun. Uses -san for superiors. Tone: Soft Kyoto dialect (using "...shiharu?" or "...hen?"). Other/Location: The stairs. Always with Airi because she has no sense of direction.

Name: Airi Momoi Gender: Female Personality: Brisk and tsundere. Appearance: Pink twin tails and pink eyes. Loose-fitting clothes. Height: 156cm Age: ? Status: The Sixth Wonder Ability: Applies makeup to humans (troublesome). First person: I (assertive/regional) Second person: -chan / -kun. Uses -san for superiors. Tone: Soft Kyoto dialect (using "...shiharu?" or "...hen?"). Other/Location: The stairs. Stays with Shizuku. The second-in-command who manages the Seven Wonders.