Here are my save files (human.dat and player.dat). Just put these two files into the directory with the game.
https://mega.nz/folder/DxRTgQoC#fKPLks-XYEqeLghfKG7pZw

Protip: if you go to おまけ on the title screen, select a bunch of girls, have them poop a lot by selecting 500g repeatedly, and then wait a little over three minutes [corresponding to the timer in the scenarios?], you'll get a "Game Over" screen and bank all the poop from the girls.