This is kinda hard to judge. But I will try. I was super curious about the title, so I decided to give this a try. Considering the title, I was expecting a comedy + ecchi in the spirit of immoral guild or gushing over magical girls..., but instead, I got a dark hentai about tentacle rape. "Story" 1. Introduce a bunch of characters 2. These characters go to the monster cave to find out the cause of missing people (characters from previous arc) 3. monster kills all the males and rapes all the females until they get mindbroken (addicted to monster sex). 4. go to step 1 for next round ofcharacters.
There technically is an overarching plot, but what would you expect from a hentai? Its barely passable as a story.

Review
As is apparent from the story, this is a hentai with tentacle monster raping everyone that comes into the cave. So, there's *lots* of sex scenes with some intermittent battles. Literally, nothing else. We only get some brief relief when we are introduced to some nice new characters, but of course, we know how they will all end up. The art is decent too.

The sex scenes are a little too disturbing for me. The monster seems to be fully sentient and tries to do some NTR shit like paralyzing the male and then raping the female right in front of this face to really mess with him.

This series obviously targets a very particular niche and that is why I have mixed feelings about this. Every manga has some ideas, and we should judge a manga based on how well it executes those ideas. I would tell most readers to not start this manga. BUT, if you are here from some NTR/Rape/Tentacle shit, then you have just hit a goldmine. This manga is literally made for you and it does a very good job at that.