iteresting concept can't say much with only 2 chapters
the reason i say its not for me is due to personal preference so it doesn"t mean the story is no good.
the story itself is rather good and the gramar is great as well
In the first book after the death of princess diana retained her memories but after the first book she Does not
and the way the mc wakes up changes as well
all of the chapters you wrote are so short that put together the form a prologue
now you said it's based on mondaiji tatchi but have u ever read the light novel higschool dxd or seen the anime, cuz u used some stuff from that as well such as the rating games