In terms of anime, I love the isekai genre; I have watched MANY an isekai AND my favorite is that of Grimgar of Fantasy and Ash .
Lately, through my many hours of study and analyzation, I have stumbled across a “theorem”. There has been a particular class of character that IF within said isekai then, there is a STRONG indication that the anime is about as fire - if not flameyier - than Endeavor using Prominence Burn Amaterasu. This character that I speak of is what I have termed the Royal Female Masochist - RFM for short. The prerequisites are simple and succinct:
1) They must be female;
2) They must be of royal status or stature; and
3) They find pleasure, gratitude, or intense satisfaction in either pain, embarrassment, or both.
If this high-threshold tolerating pound of punishment princessery graces your isekai of choice, more than likely you're isekai is, indeed, a good one; nay, a grand one!
Before you are three examples to back my scientific hypothesis: Darkness (aka Dustiness Ford Lalatina) from KonoSuba;
I'll let you all guess which one of these three is my personal favorite but, I just wanted to place to this discovery and theorem on the official record before Gigguk inevitable takes credit. Let the record show, I am the Charles Darwin of this discovery!!!! That is all.