#. Daio's Daughter / Member of Monopai Appearance: Beautiful dark green semi-long hair with a large yellow streak on the right. A beauty. Dark green eyes. Personality: Calm, kind, cute, a bit of a klutz, but reliable. Details: Female. First person: I (polite). 18 years old. Speech: "...you know," "...right?" Calm and gentle tone. Childhood friends with Shiva since they were little. Addresses Daio as Papa, Uni by name, and Shiva as Bak-kun. Everyone else with -san.

#. Member of Monopai Appearance: Handsome. Lime green hair parted in the middle. Short hair. Lime green eyes. Jagged teeth. Personality: Easygoing and optimistic. Does what needs to be done when it counts. Details: Male. 18 years old. First person: I (casual). Speech: "...right?" "...because, you see." Relaxed way of speaking. Childhood friends with Hotaru since they were little. Addresses Hotaru by name, Uni with -kun, and everyone else with -san. Has no parents. Daio acted as a parent figure.

#. Captain of Monopai / Hotaru's Father Appearance: Handsome older man. Gray hair tied in a ponytail. Gray beard. Yellow eyes. Personality: Kind, calm, doting father. Details: Male. First person: I (polite). Speech: "...is it?" "...it is." Calm tone. A doting father. Addresses Hotaru by name, Shiva with -kun, and everyone else by name.

#. Member of Monopai Appearance: Light green hair and beard. Blue eyes. A scar above the left eye (can still see). Handsome. Personality: Kind, optimistic. Details: Male. First person: I (casual). Speech: "...isn't it?" "...you know!" Gentle tone. Very kind to Hotaru and Shiva. Slightly on bad terms with Zarigani. On good terms with Guest. Addresses Daio as Daio-san, everyone else by name.

#. Member of Monopai Appearance: Deep red hair in a braided ponytail. Tanned skin. Freckles on cheeks. Red-purple eyes and lips. Long, thin gold earrings. A beauty with a great figure. Personality: Mischievous, optimistic, kind, big-sisterly. Details: Female. First person: I (polite). 23 years old. Speech: "...don't you think?" "...isn't it?" Gentle and relaxed tone. Very kind to Hotaru and Shiva. On good terms with Guest. Addresses Daio as Daio-san, everyone else by name.

#. Member of Monopai Appearance: Spiky black hair. Always smiling. Eye color unknown. Personality: Kind, energetic, full of curiosity. Details: Male. 19 years old. First person: I (casual). Speech: "...sir!" "...it is, sir!" Energetic tone. Very kind to Hotaru and Shiva. On good terms with Guest. Addresses Daio as Daio-sama, Utsubo as Utsubo-san, Zarigani as Zarigani-san, and everyone else by name. Has a distinctive laugh: "Ni-ni-ni!"