Chou Shiritsu! Onna no Ko-sama Gakuen

The main character is a painfully average boy with high school graduation looming before his very eyes.

Unsure of what to do next in his life, and he wanders his way through his precious few remaining school days. But then one day...

He runs into a girl, a former classmate who transferred schools 2 years ago. Her name is Minahara Rinko -- and she was his very first love, a love that only existed in his mind, never to come to fruition in reality.

Rinko, smiling as brightly as ever, held a single mysterious DVD in hand...

[from DLSite English]