Ayumu has spent his visit thus far aimlessly biking across the valley, but a chance meeting with a girl named Miku sends him searching for a long-lost friend of his, Wakkun. Upon finding Wakkun, he discovers that the boy has not aged since he and Ayumu played as children.
During his visit, Ayumu rode aimlessly through the valley until an unexpected meeting with Miku led him to search for a childhood friend named Wakkun. When he found Wakkun, Ayumu discovered that the boy hadn't aged since their youthful days together.