I’m really sorry about those errors. I checked Madoka’s quest and fixed a bug I found. I was able to complete the quest, I hope you can too, although I noticed the quest didn’t work as well as I expected, I don’t know why. I need to investigate more. Regarding the bug in Kaede’s quest, I’ll look into it as soon as I can, I won’t forget about it. The game, anyway, needs a serious review, I have a lot to fix. I apologize for this.
As for your questions, there aren’t any sex scenes in the showers in the game yet, but there will be in future versions, I’m sorry for the delay.
About Kokoro, there aren’t any sex scenes with her yet, only kissing scenes. She’s the purest of all the characters, so her sex scenes will take longer to arrive.