The release of this second preview trailer for the Hen Zemi OVA, back in July, was soon followed by the announcement of a second OVA volume. The first one was released on July 23, 2010, and the second one will be bundled with the limited first edition of the 5th manga volume, out in Japan on March 23, 2011. Hen Zemi is adapted by studio Xebec, based on TAGRO's "abnormal comedy" manga also known as Abnormal Physiology Seminar. In the story, Nanako Matsutaka has been assigned to the Abnormal Physiology Seminar, even though she herself is a rather ordinary person with no abnormalities in particular. On the other hand, her classmates, including the college upperclassman Komugi Musashi, have just about every abnormal condition to speak of.