I haven't laughed so hard in ages; running gags, gender blending, pervert humor, parody, etc.
Ayumu Aikawa is a zombie resurrected by a necromancer named Eucliwood Hellscythe after being killed by a serial killer. As he tries to make the best of his undead life, he encounters a Masō-Shōjo named Haruna and inadvertently takes her magic powers, being forced to become a Masō-Shōjo in the process. With Eucliwood, Haruna, and a vampire ninja named Seraphim living with him, Ayumu helps battle demons known as Megalos while trying to figure out the mystery behind his own death.
It helped broaden my horizons, downloaded a few comedy harem/sol anime, a first for me.
Worst part of the anime was the final episode (not OVA, Ep 12). Yes, it fan service but does anyone really want 10 minutes of miscellaneous lolis singing to a terrible CGI crowd?
Season 2, coming April 2012 as well.