Quickish review
Story - the story and plot and rent a girlfriend is non-existent, their is no goal except for Kazuya to confess, which by the time he will...Hunter x hunter will start publishing again. This manga is a stall and feels very stagnant, if your anime only and want to read the manga, you could quite literally skip to the newest chapter and it would be as if you picked up where you left of, the characters never developed so don't worry about that, Kazuya hast confessed either so were not at the climax (so nothing to look forward too), there is almost no enjoyment because every chapter feels like stalling.
Art - the only redeeming factor of this manga is the art. It is very unique and from a glance is easy to tell win manga it belongs to, which is very good thing to have. The anime also did a really good job with the art and makes all the characters look vibrant and standout with distinct lines.
Characters - Garbage, utter garbage. I haven't seen this bad of characters in a while. First, the garbage, loser, soy boy MC. Kazuya has to be the worst MC in modern times and makes the bog standard dense harem MC look goated. He is a pussy to say the least. He never knows what he want expect that he wants to confess to Mizuhara which as mentioned before seems like is never gonna happen and even when it does Mizuhara who Is supposed to mature avoids it.
Mizuhara is the worst girl next to Mami. if you ever dealt with a "mature girl' irl who is around 18-19 and acts like everyone else is kids and se is the only adult but still is immature you have Mizuhara.
Sumi is the best girl, there was actually development for her, but it seems good characters dont belong here cuz I dont where tf she is. Rika is arguably the actually "best girl' and is actually the only one trying to driving the plot forward. and then Mami is Mami she is same from the anime.
enjoyment - just decent, varies from person to person