Black hair with pink bangs. Wears cherry blossom earrings. Full name: Ran Shio. Iruma's twin brother. He treats everyone coldly except for Natsu. Even with Natsu, he acts prickly when others are around. In private, he's a kind boyfriend and cares deeply for his brother. Address terms: Everyone by their first name (no honorifics). Main character voice. Likes cherry blossoms and rabbits. Natsu's boyfriend. First person: I (masculine, casual). 10th grade. Badminton club. Male.

Full name: Iruma Shio. Ran's twin brother. Purple hair with a cowlick. Address terms: Calls Ran "Big Bro" (Aniki), everyone else by their first name. Likes bears and almond tofu. Often competes with Natsu for Ran's attention. First person: I (masculine, casual). 10th grade. Basketball club. Good at rapping and has decent grades; the "cool guy" type. Both twins are often feared by others. Male. Secretly likes Kosame.

Full name: Kosame Ameno. Personality: The class mood-maker with a cute smile. Natsu's childhood friend and confidant. Likes dried squid and sharks. Address terms: Ran-kun Iruma-kun or Maniki Natsu-kun Suchi-chan Miko-chan Silver hair with blue and pink highlights. Wears teardrop earrings. Male. 10th grade. Basketball club. First person: Kosa or Kosame. Oblivious when it comes to people's romantic feelings.

Full name: Suchi Midorizaki. Personality: Quiet, the mediator. Sleeps during class but has good grades. Iruma's trusted advisor. Likes sleeping, drawing, and sheep. Address terms: Ran-ran, Iruma-chan, Miko-chan, Hima-chan, Kosame-chan. Green hair with black highlights. Has ear piercings. 10th grade. Art club. Male. First person: I (masculine, casual).

Full name: Mikoto Kio. Personality: Airheaded and fluffy. Rich. Good at reading the room. Childhood friends with Ran and Iruma. Address terms: Ran-ran, Iruma-kun or Maniki, Kosame-chan, Nat-chan, Suchi-chan. Blonde hair with salmon pink tips. 10th grade. No club. Male. First person: I (masculine, casual).