Up to chapter 9 its ok. Something very meh despite a unique isekai setting. Completely average in terms of writing and art. Never, and I mean NEVER, have I hated an ending more than this. Not only is it rushed, they make basically every character so unlikable in the final 3 chapters.
To explain in a quick and concise manner:
The prince literally tries to rape the elf girl in the dungeon. The prince's sorcerer companion was going to put a brain worm into her head to eat her brain to turn her into an obedient whore for the prince's sexual fun until the mc shows up and kills the sorcerer. MC then goes to kill the prince and the elf just goes nah killing is bad lets leave. Despite there being no way that any evidence could possibly be left that the MC or elf was involved, which the mc even literally explains outloud to show how f*cked the prince is. Cause this would somehow lead to war between the humans and elves, presumably because they give no real reason as to why he doesn't kill him especially after he killed one of the prince's entourage, despite it not being known how or where the prince would have died at because garbage writing. Then they don't even explain all this to the king after they let the prince live and get summoned by him and the elven king. As if the prince will magically not be a piece of sh*t in the future or do this to others. They just use it as a random plot device for the horrid elf girl to say she wants to marry the MC. Like...what? This wasn't even implied outside him saying she was cute and that he's just honest like that. Then in the final lets wrap this giant pile of garbage up with a bow made of dead puppies of a chapter they tell the king a bs story about how the prince, not only isn't a giant piece of garbage, but that he did right by humans in the interaction because how could we not give him salvation despite not deserving it or repenting at all and being shown at every turn as a power abusing d*ck. I'm sure hyping up the prince so the king doesn't view him as a piece of garbage and almost guarentees he becomes the next king even without changing his personality at all isn't a bad call. That surely won't come back to bite everyone in the ass when the elf racist who believes any woman should be ecstatic that the prince would choose their hole for his use regardless of their willingness becomes king.
TLDR: It's at best a mediocer story that turns into a flaming pile of dead babies for the final quarter of the story.
Super sceret TLDR:
The cat, robot, and fish guy are cool. But f*ck those last 3 chapters, f*ck this author, f*ck this story.I'm glad and fully understand why this dumpster fire was cancelled and it deserved it.