Six episodes in, my biggest problem is that the MC is frustrating with his thought process and how big of a degenerate he is. I can understand perving to an extent, but some of the thoughts and actions have been just frustrating and show zero self restraint, and it doesn't look like he's learning much or showing personal growth which is something I'd really hoped for. Rather than making it seem like he chars about any of the girls in the story, it feels like he just cares about their bodies.
Overall, however, the plot line has been fine and I enjoy the way the characters have been written... mostly. There are some frustrating things, but I think it's largely a matter of preference.