The test difficulty must be high, so Soushi fails the exam, and then, after Ayumi fails as well, don't increase her grades after. Aside from that, just choose corruption oriented choices and you should get her corruption high enough.
That's basically it. Her corruption needs to be 31 or higher for the option to appear.
It's a little tricky because you need to do some things in a particular order at the beginning (before the first exam), but then just push her towards corruption and you'll get it.
The quest failing (which I assume is Ayumi's Anal) is because of an oversight by my part. You will be able to complete every board request in whatever way possible, NTR or not. Of course, NTR-specific quests will only appear if you have NTR enabled.
No date yet, I usually only give those when I'm at the final stages of the dev cycle. And the upcoming update will have plenty of MC + Girls action. ( ͡° ͜ʖ ͡° )
No issue in particular, just that the game is made to be run as a standalone ren'py client. Any extra step can present new problems that weren't taken into account.
If you haven't had any issues, then don't worry about it. ;)
The game is not complete, it's an ongoing project. If your game says 0.09.2a on the bottom right corner of the main menu screen, then you already have the most recent version.
Okie dokie, I'll keep an eye out for any major issues, but it's running fine for me. Also, it's always better to download the game and play it on your device instead of through the itch app.