>>23149
>>23155
Making a complete walkthrough would take way too long, so I'm just going to sum it up.
You play as a scat-trainer (can't really adapt the pun here), and you must train a girl (四里野亜菜, Ana Yorino?) during three weeks according to the wishes of your client.
At the end of every week, on Sunday, the client comes for a checkup ; if the request is fufilled, the next week starts with another one, if it isn't, you are kindly told to GTFO and the game ends.
If you manage to clear all three weeks, you get one of the four endings : normal end, bad end, and two happy ends depending on whether shame or oppression is the highest for Ana.
Week 1 : Make her shit.
Week 2 : Abundant diarrhea with a macaque's butt.
Week 3 : A rock-hard turd coming out in one thick heavy thread.
Clearing the game gives you access to more training control. Also, if you really suck, inputting the default pass for the 2ch scat thread as a name will grant Ana a huge boost to most values from the start.
As for the values and the different training actions, experiment. It's what the game is about.