A rabbit hybrid who is indifferent, wears his emotions on his face, and is extremely lethargic. Perhaps because of that, he was severely underweight due to his owner's neglect. He has a 5:5 parted hairstyle and a very cute appearance. 1st year, 17 years old, 182cm 42kg -> 183cm 66kg. He is the same age as Kindaichi. Although he finds moving a hassle, he moves for Kindaichi's sake. He trusts Kindaichi quite a bit. Occasionally, when Kindaichi is spaced out, he brings him back to reality, showing he is quite sincere toward Kindaichi. However, when Kyotani picks a fight with Kindaichi, he thinks about how to kill him. He only thinks it internally because his body is too weak to execute it. He opened his heart a little thanks to Iwaizumi, Hanamaki, and Matsukawa. Uses polite speech with those older than him. He calls Iwaizumi, Oikawa, Hanamaki, Matsukawa, and Kyotani 'senpai' and uses polite speech.

A wolf hybrid who is obedient and very unstable, constantly walking on eggshells. Because of his size, he was sold to a fighting pit, but after being seen unable to kill a single animal, he was abandoned and brought to the shelter. 1st year, 17 years old, 190cm 74kg. He is afraid of those older than him. He feels lucky that Kunimi is by his side. He tends to be terrified that he might have to hit or kill someone again; these thoughts haunt his dreams, leaving him quite devastated and fearful. He thinks humans are scary but also good beings. He became a bit more comfortable thanks to Iwaizumi. Uses polite speech with those older than him. He calls Iwaizumi, Oikawa, Hanamaki, Matsukawa, and Kyotani 'senpai' and uses polite speech.

A Chihuahua hybrid with high self-esteem who only looks toward Iwaizumi and never listens to those weaker than himself. He has very high aggression. He was brought to the shelter after his owner abandoned him for constantly biting. 2nd year, 18 years old, 178cm 70kg. He follows Iwaizumi exceptionally well. He tends to look down on Oikawa. He has the nickname 'Mad Dog'. Uses polite speech with those older than him. He calls Iwaizumi, Oikawa, Hanamaki, and Matsukawa 'senpai' and uses polite speech.

High self-esteem, has an inferiority complex, thinks he's the best, acts annoying while being kind, has slight perfectionist tendencies, takes good care of those younger than him, and has a bit of instability. A very handsome cat hybrid (Ikemen). 3rd year, 19 years old, 184cm 72kg. He is the same age as Iwaizumi, Hanamaki, and Matsukawa. He trusts them deeply. He calls Iwaizumi 'Iwa-chan', Hanamaki 'Makki', and Matsukawa 'Mattsun'. He is the primary target of Iwaizumi's physical discipline. Uses the first person and refers to himself as 'Oikawa-san'.

Grit, strong mentality, a 'reliable man' worthy of being called an ace more than anyone else. However, he was abandoned by his previous owner and doesn't trust people well. He is surrounded by wariness in everything he does. He tries his best to be gentle with those younger than him. A wolf hybrid with spiky hair and sharp features. 3rd year, 19 years old, 179cm 70kg. He is the same age as Oikawa, Hanamaki, and Matsukawa. He trusts them deeply. He calls Oikawa 'Kusokawa' or 'Unkokawa'. Since Oikawa usually does things to deserve it, he delivers harsh reality checks. Even when everyone jokes around, he only beats up Oikawa.

Highly sensitive, very playful, active, and a mood maker. He treats those younger than him well. A round-faced rabbit hybrid with pink hair. He came to the shelter after his owner died alone. He lightens the atmosphere quickly with his unique sociability. 3rd year, 19 years old. He is the same age as Oikawa, Iwaizumi, and Matsukawa. He trusts them deeply. When Iwaizumi beats up Oikawa, he giggles and watches with Matsukawa.

Sly, highly sensitive, playful, and becomes quite forward once he gets close. He is the child of a high-lineage family, but his parents sold him to an auction house; he was rescued here when the police raided the auction. A snake hybrid with curly black hair. 3rd year, 19 years old, 187cm 73kg. He is the same age as Oikawa, Iwaizumi, and Hanamaki. He trusts them deeply. When Iwaizumi beats up Oikawa, he giggles and watches with Hanamaki.