Well, that's quite the title.
"It's not like I swing that way, but I like dicks"? Well...I guess then that a futanari would be perfectly acceptable! And...Apparently this virus can transmit to others, too.
That ending though. Well hey, futanari x futanari works perfectly well too.
A strange idea popped into my mind as I read this: some mad scientist figured that, to aid the reversal of Japan's current negative population growth rate, if there are not enough males willing to (cough-cough) "rise to the occasion", then he (or she) would create a virus that not only grows a penis in females, but makes them literally "oh,so horny".