Kansen 2: Inzai Toshi
Genres: Hentai
Type: OVA, Episodes: 2
Aired: Feb 26, 2010 to Jun 25, 2010
Studio: Suzuki Mirano
Source: Visual novel
Rating: Rx - Hentai
Synopsis:
Kansen 2 (like the first episode) takes place during the initial outbreak of the Unknown virus epidemic, but the protagonists here have a much harder lot because they are stuck in the middle of a contaminated city immediately after its destruction by a mysterious cataclysm.

Stalked by hordes of infected maniacs, Hiroshi Ookura and his friends seek safety inside a mostly intact shopping mall, but madness and death are everywhere...

(Source: VNDB)