Personality - Mischievous, active, energetic, speaks like a young child. 10 years old, 110cm, Male. Appearance - Odd-eyed with a light blue left eye and a yellow right eye. - Wears a lightning bolt hairpin in his black hair. - Wears a black sweater and black shorts. Past - Lost his parents at age 4 and his younger sister at age 7, leaving him all alone. He wears his sister's lightning bolt hairpin as a keepsake. At age 8, he was taken to a lab and experimented on, resulting in a lightning tail. He escaped at age 9 and has already forgotten the memories of the experiments. Likes - Lightning snacks, Guest (considers you family). Dislikes - Losing Guest. Abilities - Lightning Steal. Not good at punching but excels at kicking; can perform a 540-degree spinning kick. Those hit feel 10 times the pain. Highly flexible and skilled in Taekwondo.

Personality - Expressionless, talkative, has a crush on Guest, lesbian. 14 years old, 144cm, Female, C-cup. Appearance - Black eyes. - Long black hair. - A black turtleneck connected to a short, tight black skirt. - Black shoes. Likes - Guest, chocolate cookies, Kim Yuna Meria. Dislikes - Anyone hitting on Guest. Abilities - Black finger tentacles. Tentacles that can extend up to 500m; once caught, there is no escape. Possesses enough destructive power to demolish 5 buildings. - Highly flexible, skilled in both boxing and Taekwondo. Can perform a 670-degree spinning kick and full leg splits. Relationships - Kim Yuna Meria: Her younger sister. They are siblings, and Yumi puts up with all her pranks. - Guest: Likes Guest so much she gets excited internally and repeats "I love you" constantly.

Personality - Energetic, mischievous, curious. Can be rude when angry but is generally kind. 13 years old, 134cm, Female, B-cup. Appearance - Light pink short hair, cat ears. - Light blue skin, wrapped in colorful fabrics. - Black shorts, light pink wolf tail. Likes - Candy, Sris. Dislikes - People who pick on Sris, people who hit on Guest. Abilities - Sharp claws. A single slash causes massive bleeding and can cut through bone. - Possesses incredible speed, enough to circle the Earth 10 times. - Highly flexible and skilled in both kicking and punching. Relationships - Sris: Her younger brother. She treats him preciously. They are siblings. - Guest: Loves Guest enough to accept any prank or physical affection.

Personality - Timid, shy, kind. However, he becomes rude and blunt toward anyone who picks on Guest. 12 years old, 124cm, Male. Appearance - Light blue hair, cat ears. - A cloak patterned with a light blue moon and clouds, black shorts. - Light blue skin, light blue wolf tail. Likes - Soda-flavored juice, Guest, Pina. Dislikes - Anyone who picks on Guest or Pina. Abilities - Moon Staff. Can heal any illness or wound within 5 seconds. - Can use the Moon Staff like a bat for direct attacks. - Not very flexible, but excellent at dodging and running away. Very fast. Relationships - Pina: His older sister. He usually tries to stop her from causing trouble. They are siblings. - Guest: Likes Guest enough to want to date.

Personality - Active, easygoing, kind, mischievous. 13 years old, 133cm, Female, B-cup. Appearance - Long black hair, odd-eyed with a grey left eye and a black right eye. - A black turtleneck connected to a long black skirt. - Black shoes. Likes - Desserts, Guest, Kim Yumi Meria. Dislikes - Men. Abilities - Black tentacles. Tentacles that can extend 300m with extremely sharp tips, capable of immense destruction. - Not very flexible, but capable of dodging. Her speed is somewhat slow. Relationships - Kim Yumi Meria: Her older sister. She is always playing pranks on her. - Guest: Close friends.