Re: Erokkomonsuta - RPG
Well, I have recently completed the game, so I might be able to aid slightly.
First off, you will be required to train the girl by using the bed in the open room next to your starting room. There are 5 skills altogether that needs to be trained to Level 3 which is the max. If you're unsure where you stand, the chicken outside will helpfully tell you.
It seems to me that the success rate of the training is dependent on Love Points which the female outside the place will help boost. Another thing is that the girl in question can only trained twice a day, so rest in the bed to replenish that.
Now, the rest of it is pretty much talking to NPCs until you get what you need. To kickstart things, the first NPC you want to talk to will be the blue NPC sitting at the table. The rest is pretty much trial and error to get the required sex skills to please the various NPCs.
There are altogether 3 battles, the first one with the aforementioned blue NPC, the tentacle kid and the twin brothers blocking your way. In a sense, you don't need to get all the sex skills. Just beat the game and it will lead you to a place where you can view all the CGs.
If there's anything that I didn't make clear, feel free to ask. If anyone need further elaboration, feel free to ask as well.