To begin with, I want to clarify that these are my personal opinions, and they shouldn't influence your perspective. My advice would be to form your own conclusions by doing your own research. With that said, let's discuss the book's genre breakdown. It's primarily a 70% slice of life, harem (multiple female characters), comedy (which I question the fit), and fantasy blend, with the remaining 30% consisting of adventure and some action.
The story involves an OP (Overpowered Protagonist) character who, after getting transported, acquires cheat items and abilities, turning him instantly powerful. The MC has a poker face that makes him appear emotionless, which can be confusing. Despite threats to his companions, he tries to save his enemies, creating inconsistencies. His power levels escalate rapidly, allowing him to gain mastery in various areas by allocating skill points after experiencing them once. This lack of challenge becomes unrealistic.
As the story progresses, the protagonist's cheat-like nature becomes increasingly absurd, performing miracles and developing advanced technology effortlessly. He avoids conflicts initially but eventually becomes a hero with his overwhelming powers. His identity as a hero is hidden for reasons that seem contrived, only to reveal it suddenly to his harem.
The slice of life aspect focuses on the MC's daily life with his harem, detailing their meals and adventures. They hunt mythical creatures and explore the world together. However, character development relies heavily on stereotypes, and convenience prevails.
The harem itself consists of numerous girls, some underage and others in servitude. The MC's relationships are vague, and he doesn't address their feelings, even with a love interest. A subplot involving having many children is introduced without much depth.
The comedy tag doesn't seem appropriate, as the humor is minimal and mostly based on the reactions of others to the MC's powers. The fantasy/adventure/action elements have a decent world-building foundation but lose credibility with overpowered teleportation and constant plot-saving.
In conclusion, I have mixed feelings about the series. It started with potential but became diluted by the author's personal desires. If you're looking for a wish-fulfillment story, this might suit you. However, it lacks balance and realistic challenges.