Completly agree with Kiwii here.
I absolutely hate the current grind at level 4. I am like 60% through and I did this for 3 or 4 hours straight, with almost always having bad RNG.
I don't mind a little bit of grind in such games, but really this is just way too much and annoying.
Some play this game for the content and the story, others just want to have naughty fun playing it.
I don't get why you would introduce such a horrible tremendous grind in a game that is designed to "please" players.
But just as a tip for anyone doing the grind, you can also use the "sleep 3/6 hours" option and wake up at 4-5 AM and just timeskip properly until 5:59 to have better chances at the morning bathroom event.