Giichi Ichikawa is a second-year student and a key member of the film club at an all-boys' high school. He is widely recognized, including by himself, as a film fanatic with an intense and unwavering passion for the craft of moviemaking. This dedication manifests in a strict, orderly, and thorough personality, especially when it comes to his work on film projects. He expects the best from both himself and others, and is known to be uncompromising in his efforts to see his creative vision through to completion. This rigid and focused nature often puts him at odds with the film club's president, third-year student Jin Kikuchihara, as Giichi views Jin as an arrogant rival whose flashy and flamboyant style clashes with his own more disciplined approach.

Giichi's primary motivation is his deep love for film and his determination to create exceptional cinema. This drive leads him to write and direct a Boys' Love film for the second-year team's entry in the school's cultural festival, a project he is confident will allow his group to beat the third-years' entry. His role in the story is intrinsically linked to his dynamic with Jin Kikuchihara. What begins as a fierce rivalry, filled with constant arguments and open antagonism, takes a dramatic turn when an accidental kiss during a heated confrontation forces the two to become more conscious of each other. This shift is complicated further when family troubles force Giichi to move into the dormitory, where he becomes Jin's temporary roommate. This new proximity blurs the lines between their professional rivalry and personal feelings, eventually leading to a romantic relationship.

The most significant relationship in Giichi's life is with Jin Kikuchihara. Their connection evolves from mutual animosity to a deep romantic partnership, navigating the complexities of their differing personalities and the impending challenge of Jin's graduation. Giichi also has a relationship with his fellow club members, particularly the third-years, who ultimately vote for him to become the next club president, acknowledging his talent and leadership. He is known to lead his own group of second-year club members, sometimes referred to as the Ichikawa-gumi.

Throughout his story, Giichi undergoes considerable development. He begins as a rigid and confrontational rival, openly challenging Jin's authority and methods. However, the forced intimacy of their shared living situation and the accidental kiss break down the walls he has built. He learns to reconcile his professional drive with his personal feelings, allowing himself to become vulnerable and develop a romantic connection with someone he once considered only an enemy. His deep theoretical knowledge of BL, as a fan and creator, contrasts with his own lack of personal romantic experience, a detail that informs his journey as he navigates his new relationship with Jin. Giichi's notable abilities include his skills as a director, writer, and a passionate student of cinema. He is a creative force with a loud passion for filmmaking, capable of inspiring and leading his peers on ambitious projects.