This OVA was released alongside the pre-ordered version of the original manga Tankôbon Vol. 7.
Due to the OVA's extreme sexuality level, Alice's character seemingly disappears during the night the group endures the hallucinations. However, she simply ran away with Zero when told to by Takashi. This was done out of decency by the writers.
The weapon Takashi found at the swimsuit hut can be seen to have the letters "HOTD" on the side, representing the name of the series.
Despite Alice stating that their mission with the outside world is not over, and the OVA ending with "TO BE CONTINUED", no second season for "Highschool of the Dead" has been produced.