Hime's aspiration to uphold an impeccable reputation prompts her to substitute for an injured cafe manager, but the establishment's distinctive private school ambiance proves to be an obstacle. To fit in, Hime must impeccably portray the character of a barista schoolgirl with the help of the refined Mitsuki. However, while Hime's apprenticeship under Mitsuki inspires more than just admiration, a problem arises: Mitsuki cannot tolerate Hime's presence.