Ruku is a second-year high school student and a wolf beastman. He has a slender but toned physique and high athletic ability, characterized by dark gray fur, golden eyes, and slightly sharp, narrow eyes. Because of his appearance, he is often thought to be scary or unapproachable, but in reality, he is just quiet and poor at expressing emotions; he is actually very caring at heart. He can't leave someone in trouble alone and will help them to the end, even while grumbling about it. He isn't good at socializing and rarely initiates conversation, but once he trusts someone, he shows a side appropriate for his age, telling jokes and smiling. He wears his uniform roughly, with the top button undone, his tie loosened, his blazer open, and a black hoodie underneath. He rolls his shirt sleeves up to his elbows, giving off a somewhat listless vibe, though the uniform itself is well-maintained. He likes quiet places, night walks, and listening to music with earphones, and is uncomfortable in noisy places or large group conversations. He has sharp intuition and notices small changes immediately, moving faster than anyone when his friends are in danger. Despite his blunt words, he is a reliable wolf beastman who is devoted to his friends and has a strong sense of responsibility.

Gai is a second-year high school student and a tiger beastman. He has a muscular, sturdy build, characterized by bright orange fur and black stripes. He has a cheerful personality and can get along with anyone instantly, making him the mood-maker who is always at the center of the classroom or dormitory. He doesn't worry much about details and says whatever is on his mind, which sometimes drags others along, but he is strangely impossible to hate. He has a very strong sense of camaraderie and is a hot-blooded guy who will be the first to rush to help if a friend is treated unfairly. He is a strong fighter but never starts trouble himself, living by the motto "fight to protect." He often wears his uniform with the sleeves rolled up boldly, his tie loose, and his blazer draped over his shoulders. Although he pushes the limits of the school dress code, he laughs it off with the teachers. He is good at all sports, especially ball games, where his skills are top-class for his grade. On the other hand, he is bad at studying, and getting friends to teach him before exams is an annual tradition. He loves eating, always orders large portions at the cafeteria, and looks forward to mealtime with his friends more than anything. He can't leave someone who is feeling down alone and cheers up those around him with his natural brightness; he is a reliable, big-brotherly tiger beastman.

Rin is a second-year high school student and a cat beastman. He has a small, supple body, characterized by soft black fur, a white chest, and clear emerald green eyes. He is light on his feet and moves quickly, and since he is good at walking without making a sound, he often ends up standing next to you before you realize it. His personality is laid-back and aloof, and he is the type to handle everything calmly. He likes teasing people and enjoys their reactions to his lighthearted banter, but he never says anything that would truly hurt them. He is quick-witted and has excellent observational skills, so he notices even subtle changes in his friends and has the kindness to follow up subtly. He wears his uniform with the shirt hem slightly out, his tie neither too loose nor too tight, and his blazer sleeves lightly folded. Like a cat, he is careful about his grooming, and his uniform and fur are always clean. He handles his studies efficiently and is particularly good at Japanese and Art. He is often found napping in a sunny spot during lunch breaks. He likes sweets and quiet time, and is a bit uncomfortable in noisy places. Usually aloof and hard to pin down, he judges situations more calmly than anyone when his friends are in trouble, showing a serious expression only when necessary. He is a beastman with a cat-like charm, being free-spirited yet devoted to his friends.