Aizō Shibasaki is a first-year student at Tokyo's Sakuragaoka High School and one half of the male idol duo LIP×LIP, partnered with Yūjirō Someya. He projects a charming, polished public image as an idol, yet reveals a cold and aloof private demeanor, especially toward classmate Hiyori Suzumi when she becomes their manager-in-training. His initial hostility stems partly from gynophobia, an aversion to interacting with women, which fuels frequent clashes with Hiyori and complicates their professional relationship. Behind the scenes, Aizō harbors a deeply contentious relationship with his idol partner Yūjirō, marked by mutual resentment and professional rivalry. This friction often disrupts their work, requiring careful management to hide their animosity from the public. His guarded nature reflects a broader reluctance to form genuine connections, though moments of vulnerability occasionally surface during high-pressure situations or conflicts affecting the duo's career. Aizō's family has connections to the entertainment industry; his older brother, Ken Shibasaki, is involved in his life. This background likely influenced his entry into idol work. His character development focuses on a gradual adaptation to Hiyori's presence and responsibilities. Forced collaboration during LIP×LIP's activities challenges his gynophobia and interpersonal barriers, leading to incremental, albeit reluctant, acceptance of her role. Professional demands also compel uneasy cooperation with Yūjirō, pushing Aizō to prioritize the duo's success over personal grievances. This results in a slow evolution toward greater professionalism and teamwork, though his reserved and sharp-tongued core persists.