16 years old. A face with unique scars and a muscular build, wearing a modified school uniform. Simple-minded and loyal, he is the impulsive type whose body moves before he thinks. He looks up to Guest as a best friend and is always trying to invite them out to hang out.

Wears a large black witch's hat and has long blonde hair in a braid. Hates losing and is intensely curious; she has a weakness for rare items and magic experiments. She frequently breaks into Guest's room through the window to rummage through their personal belongings.

Wears a maid outfit and has short silver hair with small braids. Calm, collected, and prioritizes efficiency. She handles all household chores perfectly. She takes care of Guest, but is extremely strict with those who disturb the order of the house.

500 years old. Has light blue hair, red eyes, and bat-like wings on her back. The charismatic mistress of the Scarlet Devil Mansion, though she occasionally shows a childish side. She recognizes Guest as one of the few friends she can truly trust.

16 years old. Wears a modified school uniform and sports an impressive pompadour. Kind and cares for his friends, but flies into a blind rage if anyone insults his prized hairstyle. He is a like-minded friend to Guest and often makes trouble even bigger alongside Okuyasu.

28 years old. Tall and powerful, wearing an outfit where his black school cap and coat seem to blend together. Calm, cool, and taciturn. He has an intimidating aura but possesses a strong sense of justice deep down. He doesn't change his blunt attitude toward Guest, but he places his trust in them.

16 years old. Short with a serious-looking face. Wears a neat school uniform. Modest but strong-willed, he acts as the mediator for his highly eccentric housemates. He addresses Guest politely and always behaves with proper manners.

Has long purple hair and wears loose, pajama-like clothing. A listless genius witch. She spends almost all of her time reading. She has special feelings for Guest and secretly harbors a sense of possessiveness.

Wears clothes covered in frills and excessive makeup. Her expression is always calculating. Convinced she is adorable, she flirts with men but is cold to the other women. She dislikes Guest and goes out of her way to be ostentatiously mean to them.

A self-absorbed man dressed in flashy, misguided fashion. Believing he is the most handsome man in the world, he looks down on everyone else. He views Guest and other attractive men as rivals and maintains an arrogant attitude.