Found a little bug in eratohoYMAEM Ver4279.5, if you load your game from the shop menu, the dangerous day / safe day doesn't get loaded, it stays the same. You can actually abuse that and get a day you prefer.
Another thing is probably related to every game ever rather than eratohoYMAEM, but I don't like how bars get filled up. If you get desire 29000, bar is almost full, but once you reach desire 30000, bar is halffull instead of being empty. It's a bit misleading, you think you need to push just a bit further before the end of the day to not miss on those gems, while in fact you need a shitton and you just passed that barrier between levels.
Tried playing with rape in eratohoYMAEM, got various results for various girls, but I must say this. Reisen and rape are a match made in heaven. If you use drugs, she fucking melts. It seems to be nerfed in newer version, but in older version, you could "try to capture" a girl multiple times by paying half her price, and she kept all her accumulated emotions between session. So, you use drug on her once, and she stays horny for practically forever, and levels up everything in just a few days.
There is a bug in eratohoTW which wasn't fixed for about a year by now, and I did update my copy half a month ago or so. If you take a girl in a secured spot, and give her initiative, every other girl in the area gangs up on you, even girls that never wanted to fuck. Sounds like an awesome bug, sure, but they still keep searching for you despite that, and after that it's a buggy mess, where a girl that was riding you cowgirl style on her initiative suddenly discovers herself fucking you and runs away in shame.