Honestly, I think people focus way too much on the cucking/NTR thing. There's exactly one chapter where Kazuya fantasizes about getting cucked and, frankly, I think it's hilarious and one of the few good chapters in the manga. The real problems with Rent A Girlfriend are:
1. Kazuya is an incel piece of shit;
2. Every character except Mami is one-dimensional and boring;
3. It's 380 chapters and counting and essentially nothing happens in, like, 370 of those.
Ppl in the RAG subreddit hate Chizuru more now lol
Well yeah because the only people still invested in the manga are misogynistic incels who relate to Kazuya lol