Shouta Tanoue attends an all-girls high school in Kyoto as a classmate of the main characters. He shares a deep, longstanding friendship with Midori Ono, tracing back to their preschool years—a connection consistently anchoring his background throughout the series.

His primary motivation is a romantic interest in Aya Takayashiki, driving him to actively approach and impress her. Despite his persistent efforts to express his feelings, Aya consistently misinterprets his attentiveness as affection directed toward Midori, fueling an ongoing misunderstanding between them.

Within group social settings, particularly during board games, Shouta displays noticeable nervousness and awkwardness, especially when Aya is present. This often leads to mistakes during gameplay, causing him to appear unreliable in competitive moments. However, under pressure, he demonstrates an ability to mount strategic comebacks, reversing unfavorable situations through focused determination.

Personality-wise, he exhibits a passionate and earnest approach to both his interests and goals, exemplified by his persistent pursuit of Aya despite setbacks.

Physically, Shouta possesses a messy shock of blond hair, wide eyes, and notably long eyelashes. His typical attire is a casually worn school uniform, featuring one pant leg characteristically folded just below the calf near the ankle.

The etymology of his name reflects certain traits: "Shouta" combines the characters for "soar, glide" (翔) and "thick, big" (太), while "Tanoue" incorporates "field, rice paddy" (田) and "above, top" (上).

His character development centers on navigating social challenges, particularly his unrequited feelings and attempts to build confidence during group activities. His interactions occur primarily within school and gaming contexts, with no significant shifts in his core relationships or personal circumstances beyond these settings.