Yukimaru Kurama is a freshman member of the Momomi Futsal Club and its sole member with prior futsal experience. This background fuels his serious approach to club activities, contrasting sharply with his seniors' lack of commitment. He tries drilling basic techniques into the club's beginners, but their frequent disinterest and avoidance of training pose constant challenges. His earnest dedication clashes with the upperclassmen's casual attitude, fueling recurring friction within the team dynamic.

Known by the nicknames "Mad-maru" and "Marumaru-sensei," Yukimaru exhibits a determined personality frequently punctuated by daily mistakes. Seniors often step in to follow up or mitigate these errors, creating a dynamic where his intensity coexists with an underlying tendency for mishaps. His background positions him as a dedicated, sometimes overly intense figure striving to instill discipline against resistance.

His surname, Kurama, combines the kanji for "saddle" (鞍) and "horse" (馬). His given name, Yukimaru, means "snow" (雪) and "round," "circle," "pills," "purity," or functions as a suffix in ship names (丸). Additional personal details include: only child, Aries star sign, preference for winter, dislike of insects, favorite food is his grandmother's Ohagi, avoidance of spicy foods, and a hobby of playing puzzle-based app games with a noted skill for achieving 10 chains.

An aspect of his background reveals his mother serves as a teacher at Momomi Highschool, a detail uncovered within the game's Momomi Highschool story narrative. This familial connection adds context to his presence at the institution.