Bussy, also known as Sakkyun, is a succubus whose uncanny resemblance to the protagonist forces her into recurring roles as a body double. Her striking features include long, gradient hair shifting from magenta to lavender, straight-cut bangs, golden slit eyes, sharp fangs, and a heart-tipped devil tail. She dons a black frilly dress layered over a brown underdress, accented with purple details, and a bat-winged bonnet.

Unaware of her likeness to the princess until witnessing the protagonist in a succubus costume, Bussy faced skepticism from demons who noted their contrasting personalities. Pressured into schemes as a reluctant decoy, her calm demeanor clashes with the princess’s chaos, fueling insecurities over her own unpopularity.

Her older brother, an incubus mirroring the human king’s looks but not his drive, combines lazy charm with hidden competence, urging her to reject succubus conventions. Bussy indulges in comedy manga, savors salmon roe, and craves the crispy ends of fugashi crackers. Born on December 23, she maintains her hair’s sheen with moistened wood ear mushrooms.

After a case of mistaken identity by the queen—resolved when the princess posed as the Demon King—Bussy’s magical skills slowly improve, though her wish for a Santa-delivered wand remains unfulfilled. Anxiety plagues her over her lack of popularity, compounded by sleep-muttered affirmations like “I’m supercool” and a fear of horror films.

Localization altered her name to “Cubey” in anime to sidestep slang associations, highlighting translation nuances. Her arc weaves a grudging alliance with the princess and Alazif, though her actions often orbit their ambitions rather than her own.