The most compelling and engaging ecchi isekai I've ever read. Strongly appeals to readers with a STEM background. A lot of time is spent on explaining the intricate biology of the various monster girls and the new technology introduced by the protagonists. Yes, there are two and I really enjoy the different experiences and perspectives for which this allows. Starting in Vol 4, contains some hot takes critiquing modern feminism which are a turn-off for some, but I personally thought were done in good faith. It wasn't enough to "red-pill" me, but I thought it was fascinating to see what that side had to saybesides "women bad". The characters are unique and well-written and their dialogue is engaging. The art is pretty good but not exceptional; the most important thing to me is to be able to recognize each character and know what's going on in each scene.