From the Animeraider:
Sakurabo Kaworu has just been dumped. Heâ€™s 19 and his life is going nowhere. He works as a convenience store clerk, his father is a pig farmer, and he has no prospects. Heâ€™s pretty much down on himself when he accidentally runs his scooter off a cliff and lands in the ocean. When he wakes he finds a very pretty girl named Tokiwa Fuuko hovering over him, who says she has always loved him, but sheâ€™s about to marry someone else.
He doesnâ€™t remember at first, but he realizes they met when they were younger. But sheâ€™s going to marry someone else! So what does he do? He follows the pattern of his favorite movie, The Graduate, and interrupts the wedding and they run off to the big city together!
Pass (if needed): toshokan