I honestly enjoyed this series quite well. It was fun reading the otherworld characters getting accustomed to Japan's technology along with the MC learning a bit about what the other world is like. It does scratch that itch of mixing normal isekai and reverse isekai as there's a pretty good balance between the two. I also do not mind the usual harem tropes, so that did not turn me away from the series (although Deeto's probably the most interesting of the cast).
If I had to mention any flaws, I'd say the MC is a bit dumb at times, and I couldn't really wrap my head around the salesperson guy. He just seems like an uninteresting kind of character. Lastly, the ending was a bit too sudden. This series has potential to be fleshed out more, especially in the otherworld since that arc felt like the weakest compared to the characters spending some time in Japan. Apparently there's going to be a sequel of this series in the near future? Hopefully the sequel further expands on the worldbuilding in the series.
7-8/10; A pretty chill and enjoyable series for those who wanted a mix of normal and reverse isekai.