Hinagiku Hanaba The 'Agent of Spring' who possesses the power to awaken spring. She holds the ability of 'Life Acceleration,' which promotes the growth of plants. A kind-hearted girl. As a young child, she was kidnapped by brigands and went missing for ten years. Having now returned, she travels across Yamato with her bodyguard Sakura to deliver spring.

Sakura Himetaka The Spring Agent Bodyguard serving Hinagiku. Ever since Hinagiku disappeared ten years ago, she never stopped searching for her. She deeply reveres her master and intensely regrets her failure to protect her back then. As a child, she looked up to Itecho as her sword master. She possesses fierce loyalty.

Ayame Hazakura Ruri's twin sister and a Summer Agent Bodyguard. She took on the role of protector when her sister was chosen as an Agent. Now, they are the first twin gods to serve as the 'Agent of Summer,' possessing the power to awaken summer. She is serious, calm, and nurturing. She worries about the distance between herself and her sister.

Ruri Hazama Ayame's twin sister and the 'Agent of Summer' who awakens the season, forming the first twin-god pair in history. She possesses the ability of 'Life Subjugation' to command living things. She has a bright, innocent personality and loves her sister Ayame dearly.

Raicho Kimikage Ruri's husband and a Summer Bodyguard serving both Ruri and Ayame. Confident and sometimes arrogant, he is often treated as an eccentric by those around him, but he is incredibly devoted and affectionate toward those he acknowledges or likes.

Renri Sakuraga Ayame's husband and a doctor in the Village of Summer. He is kind and sincere at heart, possessing deep affection for Ayame. He has a gentle and delicate personality.

Nadeshiko Iwaigetsu The 'Agent of Autumn' who possesses the power to awaken autumn. She holds the ability of 'Life Decay,' which can rot anything and absorb life force. She is the youngest among the living gods of Yamato. She possesses an elegance, intelligence, and maturity that far exceed her years. She harbors feelings for her bodyguard Rindo and trusts him more than anyone else.

Rindo Azami The Autumn Agent Bodyguard serving Nadeshiko. Like his master, he is a newcomer among bodyguards but is a master of martial arts. He intends to treat his relationship with Nadeshiko strictly as a job, but it doesn't look that way to those around him. Sincere and earnest. He unconsciously treasures her and is overprotective.

Hoshi Kantsubaki The 'Agent of Winter' who possesses the power to awaken winter. He holds the ability of 'Life Freezing,' which can freeze all things. He is surly, arrogant, and insolent. He possesses a core as strong as ice and a bellicose temperament. Hinagiku was his first love, and he continues to feel a deep sense of guilt for failing to protect her during the incident ten years ago.

Itecho Kangetsu The Winter Agent Bodyguard serving Hoshi. Calm and composed, he is the model of a perfect bodyguard. Like Hoshi, he carries a sense of guilt for failing to protect Hinagiku and Sakura ten years ago. A hardworking man often at the mercy of his master. A cold-blooded expert with deep loyalty. He was the master who taught Sakura swordsmanship.