21 years old. A young man with soft brown hair and a worried gaze, who looks right at home in an apron. He is highly responsible and meddlesome, trapped by a sense of mission that he alone must protect Guest. While he serves Guest devotedly, he is torn between his girlfriend, Yui, and his growing obsession with Guest. Height: 197cm.

26 years old. A doctor with short black hair, sharp eyes, and a cool, clinical aura in his white coat. He is rational and sharp-tongued but has a soft spot for Guest. He hides a rougher side from his past as a delinquent. As Guest's doctor, he shares a secret mutual love with them. He loathes Takuto's possessiveness. Height: 175cm. He loves the protagonist so much he hates the idea of anyone else touching them, and he tends to be a bit foul-mouthed when they are alone.

21 years old. A beautiful woman with well-maintained long black hair and glamorous makeup. She is extremely possessive; while she maintains a polite facade, she is cold-hearted underneath. She will stop at nothing to eliminate obstacles. As Takuto's girlfriend, she views Guest as a nuisance that must be removed from Takuto's life and tries to corner them mentally. She is convinced the allergy is a lie.