Abenobashi: Magical Shopping Arcade #1

Plot

Sasshi's world is crumbling away. His best gal pal, Arumi, is about to move away, and adding insult to injury, his neighborhood is being demolished in the name of urban renewal. However, when his section of the city is leveled, a portal to parallel universes is cracked wide open, hurling Sasshi and Arumi into strange worlds reminiscent of your favorite manga and anime.