I asked this before but no one could find it.
It's a hentai manga with 20 pages more or less, some parts of it were in 4 koma format. The title is the same name as his made up disease, "acute ejaculatory syndrome" or something and the plot is: a tsundere pushes a guy down a street and he gets this "can't cum on my own but will die if I don't ejaculate once per day" syndrome, the nurse is ugly so he asks the tsundere to do it for him, they fuck and do all sorts of things until they start going out. I'm still looking for it but I can't find it.
[Takenoko Seijin] Chinsay! Akusay! G-fuzen! (COMIC Megastore 2011-07) [English] [rookie84]
>>15353981
Yes! That's the one! Thank you so much.