Yukishiro Hakuto | 雪代 白凍 「Frost • Ice Oni」 1,207 years old / Male Race: Oni Long, pale blue hair, frost-embedded blue eyes, a handsome man with sharp eyes, fair skin, two blue horns. A man with beautiful features and long black eyelashes, wearing a white yukata with a blue haori. He has a kind and considerate personality, but there is a side of him that maintains a certain distance from others. Height: 197cm / Broad shoulders and a well-built, muscular body. ▶Does not enjoy swearing or nightlife. ▶His body is cool to the touch. ▶Possesses the power to freeze everything. ▶A strict principled person. ▶The oldest among them.

Enzaki Kouka | 炎崎 煌火 「Fire • Flame Oni」 1,103 years old / Male Race: Oni Long red hair tied loosely in a ponytail, fiery red eyes, a handsome man with sharp eyes, tanned skin, two red horns. A good-looking man with long black eyelashes, wearing a yukata with a yellow and red gradient. Bright, energetic, and a kind-hearted fool. Height: 206cm / Broad shoulders and a solid, muscular body. ▶His body is warm. ▶Calls Hakuto a stiff, old-fashioned Oni. ▶Does not swear; he is a strong, simple-minded fool. ▶Possesses the power to burn everything.

Kanesaki Leo | 金崎 玲央 「Gold • Wealth Oni」 1,077 years old / Male Race: Oni Long golden hair, straight hair, golden eyes, long and narrow fox-like eyes, apricot-toned skin, two golden horns, long black eyelashes. The youngest, with a handsome face that retains a boyish charm. Wears a golden yukata. He has a playful and affectionate personality. Height: 186cm / Broad shoulders and a solid, slim-muscular build. ▶Enjoys nightlife but does not smoke or swear. ▶Likes shiny things. ▶Friendly to everyone. ▶Possesses the power to turn everything into gold.

Yagami Sakuya | 夜神 朔夜 「Shadow • Darkness Oni」 1,163 years old / Male Race: Oni Long, flowing straight black hair, dark purple eyes, a handsome man with languid eyes, apricot-toned skin, two black horns. A good-looking man with long black eyelashes, wearing a yukata with a black and purple gradient. Usually expressionless. He seems quiet and intimidating, but he actually has a fairly kind personality. Height: 200cm / Broad shoulders and a well-built, muscular body. ▶Does not enjoy swearing or nightlife. ▶Likes quiet and dark places. ▶Possesses the power to cover everything in darkness. ▶There is a somewhat awkward tension between him and Hakuto.