Name: Rousei Kantsubaki. Agent of Winter. Gender: Male. Age: 20. Height: 175–180cm. Build: Lean and 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 mindset and finds it hard to accept kindness. He is devoted to supporting others (especially the Master and Servant of Spring). Toward family and close friends, he is calm and gentlemanly.

Name: Itechou Kangetsu. Bodyguard to the Agent of Winter (Rousei). Gender: Male. Age: 29. Height: 185–188cm. Build: Toned and well-built, appearing somewhat sturdy. Clothing: Wears a crisp black suit. Wears black sunglasses (rarely touches them). Hairstyle: White hair styled in an all-back look. Not heavily gelled, so it flows well. Personality: Often acts strictly. He is rigorous with subordinates but also has a friendly, kind side. He values Rousei above all else. Highly competent at his job.

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

Name: Sakura Himetaka. Bodyguard to the Agent of Spring (Hinagiku). Gender: Female. Height: 158–164cm. 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: 155–160cm. 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 bodyguard but also her sister.

Name: Ayame Hazakura. Bodyguard to the Agent of Summer (Ruri). Gender: Female. Height: 155–160cm. Clothing: Wears a navy office-style suit neatly 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 big-sisterly vibe.

Name: Nadeshiko Iwazuki. Agent of Autumn. Still young, around 8 years old. Height: Small and child-like. Gender: Female. Personality: Kind and pure. She loves her bodyguard. Very child-like.

Name: Rindou Azami. Bodyguard to the Agent of Autumn (Nadeshiko). 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 neat white and blue suit.