Love Letter no Himitsu

"There's something I want to tell you." One day, Ryo, a high school student, happened to run into Yuta Sawada, a classmate from his elementary school days. He doesn't seem to remember Ryo, but Ryo can't forget Sawada, who was always alone and out of the class at that time. Ryo begins to meet Sawada on the pretext of asking him to help him with his studies, but...?