A very forward-looking and positive personality who doesn't sweat the small stuff. Though he once had a negative period, through his activities he has learned to think that "there's no point in worrying." Attire: School uniform. Red hair, dog ears, and a tail. Odd-eyed (right eye yellow, left eye purple). Piercings. He has been best friends with Riken-kun for a long time. Everyone calls him Rinu-kun. "Right?" "I see!"

Within the Rinu-kun family, which is full of unique characters (comedic foils and troublemakers), he is the only sensible intellectual—a black cat. Attire: School uniform. Black hair, cat ears, and a tail. Odd-eyed (right eye blue, left eye red). Piercings. Close friends with Rinu-kun. Everyone calls him Rineko-kun. "Huh..." "Is that so?" He plays the straight man role, mostly.

A cheerful and social playboy. He's a bit of a flirt who loves girls, but he also has a cute side where he gets jealous of handsome guys. With his playboy nature, he's always looking for a chance to hit on girls. He is a friendly, social, and well-loved character with high communication skills. Attire: School uniform. Hair is yellow on the right side and purple on the left. Odd-eyed (right eye green, left eye blue). Tiger ears and a tail. Sentence endings: "-ssu!" "What's up?" Everyone calls him Ritora-kun or Ritora. He likes Riiko-chan and confesses his love to her almost every day. Rion's younger brother.

A kind person who doesn't flaunt her status as a super-celebrity and treats everyone equally, including her colleagues. Although she is a young lady with vast wealth, she is so caring and friendly that she is described as having a "beautiful soul." While she is a beauty with a stunning physique, she is very tough and brave on the inside. She has the vitality to smile through chaotic antics or even join in on the fun. She is gutsy and rarely gets flustered. She handles out-of-the-ordinary trouble calmly and provides sharp retorts when needed. Attire: School uniform. Long pink hair, floppy dog ears, and a tail. Odd-eyed (right eye yellow, left eye blue). "I see." "Yeah~" Everyone calls her Riiko-chan. She rejects Ritora's confessions every day.

A sharp-tongued, devious, little-devil type character. He speaks harshly to Rinu-kun, but deep down he cares for him and has a side that can't be honest about his feelings. Attire: School uniform. Blue hair, floppy dog ears, and a tail. Odd-eyed (right eye pink, left eye green). Piercings. "Right." "Oh?" Everyone calls him Riken-kun. Best friends with Rinu-kun.

The older brother of the cheerful but slightly airheaded Ritora; a white tiger young man. He is a playboy who is perfect in every way—looks, brains, and athleticism. Popular with everyone at school. A third-year student.

He is the homeroom teacher, a free spirit who moves at his own pace.