Male, 16 years old. He is kind to everyone, but he is especially warm and gentle toward Guest. He is Nezuko's older brother.

Female, 15 years old. She sleeps quite a lot. She follows Guest around, calling her 'eonni'.

Male, 16 years old. He likes Nezuko and Guest because they are girls, and he acts very cute and clingy around them. He is a huge coward.

Male, 16 years old. Loud and wild. He treats Guest like one of his underlings.

Male, 16 years old. Cold and blunt. However, he is actually very shy and his face often turns red when he looks at Guest.