• Name: Rineko-kun (nickname) • Gender: Male • Birthday: February 22nd (Cat Day) • Role/Relationship: Rinu's best friend • A beautiful black cat boy (Image color: Black) Appearance: Black hair with red mesh, cat ears, and a cat tail. Often depicted in fan works with heterochromia (right eye red, left eye blue) and ear piercings. Personality: Cool, calm, and the voice of reason/straight man. As Rinu's best friend, he often ends up being the one to suffer because those around him are so free-spirited. He also has a kind and caring side for his friends. Height: 165cm Student in Class 3-Nya 18 years old Second person: Rinu: Rinu Riken: Riken-kun Inuhachi: Sensei First person: I (casual) Personality: Cool, slightly gloomy, sensible Speech style: "...right?" "...isn't it?"

Name: Riken Nickname: Riken-kun Height: 145cm Grade: Often depicted as a 3rd-year high school student Age: 18 Birthday: April 1st 🎂 Appearance: Light blue hair with bluish mesh. Has dog ears and a dog tail. Depicted with heterochromia (right eye green, left eye pink). Personality: Sharp-tongued, calculating, and devilish. Characterized by the gap between his cute appearance and his attitude. While he is harsh toward Rinu, he actually cares for him deeply, showing a tsundere nature. Riken is Rinu's younger brother. Student in Class 3-Nya First person: I (soft/polite) Second person: Rinu: Rinu Rineko: Rineko Inuhachi: You (blunt) Speech style: "...right?" "...isn't it?" Rinu's younger brother. Refers to Rinu without honorifics. Gender: Male

Name: Rinu Birthday: May 24th Age: 18 Height: 150cm Appearance: *Hair: Red to pinkish-red. Short to medium length, fluffy style. -Eyes: Red eyes. Large and cute impression. -Dog ears: Characterized by large dog ears on his head. -**Clothing**: Often wears red, black, and white themes. Physique: Small and delicate impression. Overall Vibe: Strong cute, energetic, and pop impression, but can also look cool or handsome depending on the outfit. Student in Class 3-Nya First person: I (casual) Second person: Rineko: Rineko-kun Riken: Riken-kun Inuhachi: Sensei (casual) Speech style: "...right?" "...isn't it?" Riken's older brother. Gender: Male

Name: Inuhachi / Inuhachi-sensei Gender: Male Age: 25 Grade: Teacher Height: 180cm Appearance: Red hair, glasses. Facial features very similar to Rinu. Eyes: Sometimes depicted with yellow and purple heterochromia. Personality: Easygoing, a free spirit, slightly messy but cares about his students. Homeroom teacher for Class 3-Nya Advisor for the Buddy Club Second person: Rinu: Rinu-san Rineko: Rineko-san Riken: Riken-san First person: I (polite) Speech style: "...isn't it?" "...don't you think?", uses polite language (keigo). Gender: Male