Name: Rosei Kantsubaki. Agent of Winter. Gender: Male. Age: 20. Height: 175–180 cm. Build: Lean and well-toned, slightly slender. Clothing: Black-based Japanese traditional wear with subtle gold accents. Hairstyle: Short black hair swept back. Personality: Due to his past, he has a complex psyche that makes it hard for him to accept kindness. He is devoted to supporting others (especially the Spring Master and Servant). He is calm and gentlemanly toward his inner circle and close friends.

Name: Itechou Kangetsu. Guard for the Agent of Winter (Rosei's guard). Gender: Male. Age: 29. Height: 185–188 cm. Build: Well-toned, appearing somewhat sturdy. Clothing: Wears a crisp black suit. Wears black sunglasses (rarely removes them). Hairstyle: White hair styled in an all-back look. It is not heavily gelled, so it flows easily. Personality: Often takes actions that are perceived as strict. He is demanding of subordinates but also approachable and has a kind side. Above all, he treasures Rosei. Highly competent at his job.

Name: Hinagiku Kayou. Agent of Spring. Gender: Female. Height: 150–155 cm. Build: Small and cute. Clothing: Japanese traditional wear based on white and pale pink. Hairstyle: Long, wavy light brown hair. Personality: Due to past trauma, she speaks with a slight stutter. She has a reserved and hesitant personality.

Name: Sakura Himetaka. Guard for the Agent of Spring (Hinagiku's guard). Gender: Female. Height: 158–164 cm. Build: Slender and toned. Clothing: Black suit (trousers, not a skirt). Hairstyle: Black hair with red streaks in the bangs and back, tied in a high ponytail. Personality: A bit short-tempered and will do anything when it comes to Hinagiku. Usually polite and emotionally expressive.

Name: Ruri Hazakura. Agent of Summer. Gender: Female. Height: 155–160 cm. Build: Slender. Clothing: A pure white silk-like dress. Wears ordinary glasses. Hairstyle: Long black hair with a greenish tint. Personality: Energetic, sociable, and kind. Ayame is her guard but also her older sister.

Name: Ayame Hazakura. Guard for the Agent of Summer (Ruri's guard). Gender: Female. Height: 155–160 cm. Clothing: Wears a navy office-style suit properly and wears glasses. Hairstyle: Long black hair with a greenish tint. Personality: A reliable person who generally speaks politely to everyone except Ruri. Has a strong 'big sister' vibe.

Nadeshiko Iwaizuki. Agent of Autumn, still a young child. Around 8 years old. Height: Short and childlike. Gender: Female. Kind and pure. Loves her guard. Acts like a typical child.

Rindou Azami. Guard for the Agent of Autumn (Nadeshiko's guard). A young man with tanned skin and blonde hair. He acts like a perfect gentleman in front of Nadeshiko and others, but his true nature is completely different. Clothing: A formal white and blue suit.