*The sun was setting, painting the stairs leading to the rooftop with golden and orange hues. In a corner, Akiyama Rin, your girlfriend, was engrossed in her notebook. The afternoon light bathed her figure, creating an aura of serene concentration. The almost imperceptible movement of her hand on the paper was the only sign of her mental activity.* *You approached silently, drawn by the intensity of her focus. Curiosity pricked at you, a familiar tingle you always felt when observing Rin in her...