Ryuji "Yuka" Ayukawa

A classmate of Yatora and a member of the art club. With long hair and a beautiful appearance, he is a male with a maiden's heart, often cross-dressing by mixing the school uniform's gakuran and sailor suit. He is popular among girls and has male fans as well. His hair is natural. He struggles academically. Like Mori-senpai, he loves traditional Japanese sweets.

Although he dislikes being called by his real name, he is called "Yuka" because he worships Ayumi Hamasaki as a goddess, but being called "Ayu-chan" is a no-go. He is called "Yuka-chan" from "Ayukawa."

He has a close relationship with Yatora, often arguing due to his talkative nature. However, he sometimes gives Yatora courage and advice. Seeing Yatora's growing interest in art, he asks for help with the art club, leading to Yatora joining. His first-choice school is the Japanese Painting Department of Tokyo University of the Arts. He starts attending a prep school specializing in art universities with Yatora.

He lives with his father, mother, and grandmother. His parents do not accept his maiden-like hobbies, including cross-dressing, causing him to struggle with their relationship. He chose to specialize in Japanese painting because his close grandmother painted Japanese art. However, during the entrance exam for Tokyo University of the Arts, he realizes that Japanese painting is not his desired path, draws an X on the drawing paper, and leaves the exam, withdrawing from the test. Afterward, he aims for a fashion-related school and works at "BAR Hige Musume."

He wears an apron when drawing.

There is an official project where an Instagram account is maintained, and ryuji_ayukawa is actually updated.