That's a web novel side story. It's not part of the Light Novel (which the manga and anime are based on) continuity.
That's like staying away from GTA because of the Hot Coffee mod.
No... it's part of the main cannon.
It'd be like staying away from GTA because of one of the missions...
And Author has come out on record stating they aren't changing it... (someone already mentioned it's in the spin-off).
So that's main cannon... not some side thing that isn't true canon... GL with the coping tho.
Noooooo medieval time based story has medieval themes and societal problems how dare author do that
Are you a fucking CollectiveShout member or what?
That's your defense for author writing kidnapping and grooming children arc from literal birth? And romanticizing it?
Choose a better hill to die on bruv.
Also collective shout approves of that kind of story

you obviously never saw their leaked group chat praising that exact situation of one of it's members.