Shinji Yano, a high school student and close friend of protagonist Kouji Maeda, works part-time at the Pia Carrot 2nd restaurant alongside Kouji and his romantic interest, coworker Azusa Hinomori. Shinji sports distinctive green hair and is the cousin of the restaurant's manager, Ryoko Futaba. His unrequited affection for Azusa creates a secondary love triangle, existing parallel to the primary romantic tension among Kouji, Azusa, and Tsukasa Enomoto. As the narrative advances, Shinji realizes Azusa's true feelings are for Kouji, just as Tsukasa recognizes Kouji's love for Azusa. This mutual understanding prompts Shinji to voluntarily step aside emotionally, prioritizing Azusa's happiness despite his own enduring feelings. His interactions within the restaurant environment consistently influence the interpersonal dynamics and romantic complications among the staff.