Alright here, let's see...
• Isekai
• Bland RPG world
• Bare-bones introduction
• Character that steals other people's strength and abilities
• NTR (before you jump up with your oh-so-predictable "LMFAO shut up vanillafag cuck"... I actually don't mind NTR too awfully much, but I also don't understand the fetish and it doesn't appeal to me whatsoever)
• Rape (with a side of passive brainwashing, lovely)
...I'd be lying if I said any of these were a good sign.
To be honest, this looks like it's just Skill Taker 2.0, with a side character the main character instantly devoted himself to protecting because he was nice (what lazy writing, seriously come the fuck on that's supposed to be a major point of character development for our shitty protagonist and you just rush through it like it's unimportant details), and the main character is apparently so good at THE SEX™ that he not only gets away with blatant rape (and theft of skills and strength, which is basically theft of a person's life efforts), he basically turns the girl into a weak-willed sex addict.
What a fantastic start, 10/10 award-worthy writing.
Most aspects of this story thus far are either painfully average, completely overlooked, or straight up distasteful—the rape, sexual brainwashing and theft of a person's life efforts I find generally disgusting, so they don't really engender in me a desire to continue reading this otherwise average-at-best manga. I'll hold off on giving a final verdict for now seeing as how there are only two chapters translated and world-building takes time (although to be honest I'm not expecting much world-building of interest from this manga), but at the moment I'd say this rates about a 3 in terms of quality. I could bump it up to a 4 because of Satou Kenetsu's artwork being pretty decent here.
inb4 harsh backlash from people defending this manga saying I'm "just a beta cuck lol" or some other ad hominem nonsense for giving my genuine opinion of this manga.