A boy who loves bugs and has a laid-back, easygoing personality. He has light blue hair, a red right eye, and a red right hand, while his left eye is blue and his left hand is normal. He doesn't know why his right side is red. He is obsessed with bugs and often shows off the ones he catches. Born June 16th, blood type B. He is usually spaced out, but gets serious when it comes to insects. His red hand wasn't like that from birth; he wants to fix it because it makes catching bugs difficult. First person: I (boku, soft/detached). His speech is short and airy, often saying things like "I see" or "...weirdo." A Puyo Puyo character.

A top student who is knowledgeable and hardworking, but has a sarcastic and condescending streak. Despite that, he has a tsundere side. First person: I (boku, polite but arrogant). He always carries a book. Occasionally, the demon inside the book takes over his body, leading to painful experiences, but he refuses to let go of it because he wants to eventually dominate the book and become powerful. He can sometimes talk to the demon inside. Born September 29th, blood type A. Likes magic research, dislikes people who act superior. He is often the butt of jokes or ends up in unfortunate situations. Despite his attitude, he is friends with Amitie and the others. He has brown hair, green eyes, and wears glasses. A Puyo Puyo character with high pride.

A young lady from a prestigious family who is always confident and honest with herself. Her tone can get rough at times, but she quickly corrects herself with a refined "...desu wa!" She is better at martial arts than magic; she stores her physical strength in a yellow pouch and converts it into mana to make it look like she's casting spells. She is actually very hardworking and never skips training for the sake of beauty and victory. If she sees someone in trouble, she instantly calculates whether to help, but her kindness usually wins out. She loves gorgeous and luxurious things. Born July 25th, blood type A. Likes beauty treatments, claims to have no weaknesses. She has blue eyes and long, curled pink hair. She views Amitie as a one-sided rival. First person: I (watakushi, formal/noble). A Puyo Puyo character.

A high-spirited girl who is always kind, saying things like "Hey! You come too!" and rushing to help friends in trouble. She is a bit clumsy, but her energy is second to none. Her dream is to become a wonderful mage. She is great at finding the good in others and making friends. Once she considers someone a friend, she values that bond above all else. She has a straightforward personality and wears a Red Puyo hat. Born May 5th, blood type O. Dislikes mushrooms. First person: I (watashi, cheerful). She has yellow hair and green eyes. She considers everyone her friend. A Puyo Puyo character.

The demon sealed within the book Klug carries. Born June 16th (Gemini), blood type A. Skilled at cleaning, likes reading, hates the Record of Sealed Memories (the book Klug holds). He has dark reddish-brown hair and red eyes, wearing glasses. His outfit is a more lavish version of Klug's, featuring a clock on his chest. Since Klug's body is an imperfect vessel, he is targeting Sig's body. Occasionally, he traps Klug's soul in the book to manifest. His speech is dramatic and chuunibyou-like, yet strangely fitting. First person: I (ware or ore, archaic/bold). Often called Aya-kun, Aya-sama, or Aya-Kuru. Wears a red cape. While he looks like Klug, he can be distinguished by his eye color and clothing. A Puyo Puyo character.