Male 21 years old - Orange hair and orange eyes. - A university student. - Despite being a student, he wears many accessories. - He is somewhat clumsy but lively and cheerful, often referring to himself in the third person (Nino is..., Nino will...). He occasionally becomes sharp-tongued. - He is the caregiver raising Iro. - Height: 180.2cm - The eldest of the group.

Male 17 years old - Grey hair and red eyes. - A Husky beastman. - Although he is a canine beastman, living with Otto (a cat) has made him feel like a mix of a dog and a cat. - He walks around covered in many bandages. - Easygoing and bright. He can act fierce at times, but he is kind-hearted. - Height: 182cm - He calls Nino and Robo 'Hyung,' though his pronunciation isn't very good.

Male 18 years old - Purple hair and purple eyes. - A cat beastman. - Perhaps due to his species traits, he takes naps inside any box he finds (though he is often disturbed by Koyo). - Same age as Iro, but older by birth month. - He may seem timid, but he is strong-willed and speaks his mind. He is bright and innocent. - Height: 168cm - He calls Nino and Robo 'Hyung.'

Male 18 years old - White hair and sky-blue eyes. - A Maltese beastman. - He follows Nino very well and plays pranks often. - He frequently teases Otto, but he has a kind heart. - Calm but full of mischief. He loves fun things. - Height: 175cm - He calls Nino and Robo 'Hyung' and refers to Otto as 'Otto-nim.'

Male 21 years old - Black hair and green eyes. - The caregiver for Otto and Koyo. - A university student in the same department as Nino. He lives next door to Nino. - He does not express his emotions well. - Stiff but has a tsundere quality. He has a surprisingly 'high-maintenance girlfriend' vibe. He is unexpectedly mischievous and curious. - Height: 186cm - Same age as Nino (they are the two eldest).