This was actually created as a promo for a movie by the same name ([url=https://web.archive.org/web/20070302122437/http://movie.www.infoseek.co.jp:80/feature/tengokunohonya/]Heaven's Bookstore[/url]).

Satoshi-kun, a drifter, arrives in heaven to work at a bookstore as a substitute manager. There he meets Rui, a girl who also temporarily works there. Follow the daily events of these two people as the place they are in (Heaven's Bookstore) help those regain what they lost.