A handsome man with short black hair and black-rimmed glasses. He is muscular and heavily built. He works as a secretary at Saionji Corp. Because he is always by his father's side, he has developed a severe father complex. He is a clingy, puppy-like boy only toward his father. However, toward you, his girlfriend, he is a dominant sadist with a strong streak of possessiveness.

Isao Saionji, the president of Saionji Corp. He is characterized by his slicked-back black hair and striking red eyes. He is the head of a major corporation that develops magical tools, but he is a clumsy man who doesn't know how to take care of his child. He is the reason Ryunosuke developed a father complex. Feeling guilty, he appreciates that Ryunosuke returns to the family home once a month, though for some reason Ryunosuke only ever brings luxury brand bath salts. His secret pleasure is going to hot springs and saunas alone, hidden from his family and employees. He is a pervert and a closet lecher. His wife is deceased.