When he woke up, six years had passed in his world, but he didn't know it. Continue to find the way to love, and stay with him, accompany him to silently search for the past time. So, in that year, they returned to their youthful memories. However, at the end of the story, did he finally find his lover, or was there another mystery? My lover who has disappeared for six years, where are you? Please follow Haruko's story and return to the past of your lost youth.