Jimochi is a character from the anime who primarily appears in flashback scenes, serving as a key figure from the princess's past before her imprisonment. His background is that of a former individual who was once renowned as an honorary knight. Following his time as a knight, he transitioned into royal service, taking on the role of the steward of the kingdom. In this capacity, he also became the princess's personal butler and her mentor in swordsmanship, tasked with orchestrating her rigorous training during her formative years.

Physically, Jimochi is depicted as an older man with gray hair and gray eyes. His appearance is marked by a mustache and a facial scar, and he is typically dressed in a butler's uniform that includes a vest and a bowtie. He has a dignified and strong presence that suits his position as a steward. However, his personality carries a notable duality. At first glance, he seems strict, exacting, and disciplined, enforcing combat mastery and proper decorum. Despite this stern exterior, he has a more approachable and even secretly indulgent side. He is known to have a worldly or petty side as well, such as refusing to share his own snacks. Notably, other characters, like Ex, often complain about him, using strong language to refer to the old man.

Jimochi's role in the story is to illustrate the foundation of the princess's character and abilities. As her teacher, he laid the groundwork for her signature sword techniques. His teaching method involved blending structured challenges with clear rewards. In one notable instance, he taught the princess a special sword technique that would normally take a month to master. He set a deadline of one week for her to learn it, promising that if she succeeded, she could spend the remaining days of the month playing freely. The princess mastered the move in just five days, thereby earning twenty-five days of leisure. This dynamic significantly influenced the princess's personality, fusing her disciplined resolve with a playful and sometimes willful spontaneity. The story suggests that Jimochi was one of the few people in the kingdom who was personally close to the princess, acting as an understanding guardian and a safe place for her, which shaped her for better or worse.

Beyond his role as an instructor, Jimochi also showed his affection in quiet, unconventional ways. He would secretly buy the princess snacks after her practice sessions or take her to family restaurants, actions that are often highlighted and pointed out by other characters. In this way, he acted as a clandestinely indulgent guardian. His notable abilities include his profound skill with the sword, having been an honored knight, and his expertise in teaching and managing the young princess by keeping her interested with appropriate entertainment elements and motivational tactics. His influence is such that he is considered the person who had the greatest impact on forming the princess's current personality.