Fall in Pinspot

A handsome, confident, and popular guy who plays the "boyfriend" card with everyone, Ouju Garai has recently been feeling a set of eyes on him and is driven crazy by it. It is from Taichi Yabumura, a senior at his part-time job. He thought that the senior must be in love with him. But it turns out there is an unexpected reason..⁉ (Source: Pixiv Comic, translated)