"A childhood friend who was like an older brother turned into a child." Kawa, who was the same age, grew up in the same facility, and moved to Tokyo as a roommate, was involved in a traffic accident! When Haru rushes over, he sees a river that has lost its memories and is frightened like a child!? What is the true face of his childhood friend after 25 years? A 25-year-old childish x 25-year-old restarter love!