Some of those images are not in the game because they are 'concept art'. I added them to give more previews of characters since this is only the first release and there aren't as many images yet to preview.
As for lewd scenes, there were several. The bath scene for one. If you mean there wasn't any fucking, well yeah. It's the first episode and this is a story that isn't focused on sex alone. There will be full sex scenes, but they'll happen naturally over time. Did you skip through my comments at the beginning? Hang in there and enjoy the story. It will have some rewarding sex scenes, just be patient.
Admittedly, I didn't read the disclaimer but upon finishing the chapter or episode I wondered if there was something I had missed from the screenshots.
Even without those scenes, I still enjoyed the game as it was. Looking forward to seeing where this goes.