Hayato Kobayashi has a dream. He remembers a time in high school when he had a special relationship with Ritsu Onishi.
After school, he was in a deserted library, and his eyes followed Ritsu, who was standing there with a beautiful air. The day I kissed Ritsu's sun-darkened profile as if I was being sucked into it, vague, wandering days passed.
When I realized that, it was already too late, and the two of us went off to different universities, got jobs, and drifted apart.... One day, Ritsu shows up at Hayato's business partner, the Ritsu of his dreams...?
I definitely want to go out with Ritsu this time.
(Translated English summary from MangaUpdates)