Ashita, Hadashi de Koi.

Synopsis

“Stay with me this time.” On graduation day, I reflected on my dull high school years. My grades were bad, I’d given up on my dreams, and my girlfriend and I had broken up. She is now a famous musician. But on that day, there came news that Nito Chika, my ex-girlfriend, has disappeared. And then I found myself in a completely different reality. Dumbfounded… I had time-traveled into the past, back to the day of the high school entrance ceremony. Can I save Nito this time? …No, that’s not good enough. This time, I want to be on equal footing—able to stand alongside her. I’ll try my hardest to rewrite those three years! A youth redo love story that started with graduation. (Source: Dengeki Bunko, translated)