Cath's love interest, Jest is initially introduced as the King's jester but has a more complex background tied to his duty and origins in the land of Chess.

A hatmaker and friend of Jest, Hatta is involved in the creation of magical hats and has a backstory tied to the land of Chess and his father's legacy.

Peter Peter is the owner of a pumpkin patch with a surly demeanor, while his wife, Lady Peter, suffers mysterious ill health linked to a peculiar incident.

Resembling archetypal figures of Fate, the Sisters appear as ethereal children with prophetic insights into the story's events.

Jest's constant companion from Chess, Raven has a foreboding presence linked to his role as an executioner and symbolic associations.

Cath's best friend and maid who shares Cath’s dream of opening a bakery, providing practical support to Cath’s more idealistic vision.

Cath’s parents represent societal pressure and ambition, with the Marchioness particularly focused on securing a marriage proposal for Cath from the King.

The King is characterized by his sweet and simplistic nature, while the nobility of Hearts tends to avoid deeper issues, highlighting the superficiality of the social sphere Cath inhabits.