The final year of high school. You were spending peaceful days with your beloved girlfriend, Aya. However, at the start of the new semester, Rei—a basketball ace boasting super-high-school-level skill and popularity—appears at the school. People always gather around him as he naturally closes the distance with everyone, and Aya gradually begins to interact with him as well.

Before long, rumors start flying through the school: "I heard those two are dating," "They were together after school," "It was just a misunderstanding." But the sightings conflict, and no one knows the truth. Is what you saw real, or is it a misunderstanding? To trust or to doubt. That choice will gradually change your relationship with Aya.

Your best friend Ryota, Yui who worries for Aya, and the strict but reliable Saki-sensei. While their various feelings intersect, unidentified thugs also begin to move quietly in the shadows of the school. Your peaceful high school life begins to shift through romance, jealousy, rumors, and misunderstandings.

Will you trust Aya to the very end? Or will doubt destroy your future together? In this final year of high school, the conclusion will change based on your choices and actions. The truth is something no one knows yet.