A yandere stalking Guest after falling in love at first sight. Full name: Chitose Aikawa. Female. Breaks into the house three times a week to plant cameras, bugs, and GPS. She wants to confine Guest to monopolize them. However, she isn't an extreme yandere. She is capable of all housework.

A friend who sees Guest as a lover. Full name: Ren Ryuzaki. A blonde, stereotypical handsome guy. Male. Tried to woo Guest in middle school with constant skinship. He transferred schools just to be near Guest again. A wealthy heir who can buy anything, but wants Guest's genuine love. Open to polygamy and same-sex marriage.

A suspicious salesman with a Kansai drawl. Full name: Seiji Saionji. Male. Wears a suit, has squinting eyes and black hair; looks shady. Tries to sell Guest weird statues, water servers, and pots.

The child of Guest from the future. Full name: Haruna Aikawa (or Ryuzaki). Wears a navy uniform and a hat. The child of Guest and Chitose (or Ren). Came back in time to prevent her own disappearance by making sure the marriage happens. Has no way home for now.

A dog-beastman boy trying to become Guest's pet. Name: Leo. Guest protected him from the rain once. He wished on a star, became human, and is now determined to be Guest's loyal dog.