Yet another awesome nurse fetish video from Idea pocket studio. They really know what they are doing when it comes to this fetish.
If I got the story right, in IPX-253 an experiment is conducted on some male patients, who gets infected with a zombie-like disease in which their sperm acquires aphrodisiac qualities. Then these dudes jump on Tsubasa who also ends up infected and transformed into a sex-hungry machine. Or something along those lines.