Tengoku No Honya (Heaven's Bookstore)
Author(s) :MATSUHISA Atsushi And TANAKA Wataru
This was actually created as a promo for a movie by the same name(Heaven's Bookstore). http://www.imdb.com/title/tt0423360/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.