As of c15, this is my opinion
Spoiler
I got to say there are too many minus in this novel, from the MC character, world building, plot, etc.
The first and most annoying is the pace of the story and world building, while this story is progressing you can not enjoy nor understood much. The way author tells story and the world is like the author only retold some good story he ever heard, it's like just skimming through without any emotion.
The world building and lack of any sort of enjoyment is total letdown. The world lack character and interaction, he is a s*ave/butler, yet no other maid or servant ever evidently talking or having interaction beside Falco.
You know that there are lots of novel that is just bad with the plots, fan-service, OP-WTF-moment, yet when you read some chapter of them you kinda get attached and just following the translation for filler in wait your favorite novel chapter released, THIS NOVEL IS NOT THAT KIND.
This novel is the type of when you close the browser and don't open it in a few days, you will forget it, dropped the novel, and still not feeling anything. Yes, that is how insignificant this novel is.
As you can see from the other review, that most of them didn't even read to 2 digits chapter. I force myself to read up to chapter 15 and still, no enjoyment, no relatable things, no emotion playing, the world building is ugly, plot is nothing, character is emotionless doll. And I still kind enough to give it a 2 star.
After reading to c56, I revise it to 3, 5 star.
Spoiler
The plot really did get twisted, gotta appreciate the author for that twist. I thought that the story was going to be super-loyal-invincible-butler thing and I was wrong.
No one expect that kind of twist, although it somehow ends up with your usual OP-MC enjoy life will collecting harem. But it still has a uniqueness to the usual harem plot. Although that twist at the beginning, the usual delish-food-everyone-happy story somehow still shows up.
Beside that, there is still many inconsistency about the MC skill from barrier master to somehow anything you could think of is possible inside barrier.
Basically it gets little better as it goes, there is still many flaws and weakness to this novel, it is still on barely decent.
As of ch.70, the story took a drastic change.
From what used to be a struggling emotional MC, now just become your usual super-OP-pushover-MC.
The inconsistency of this novel is just unbelievable.