are there any good iskaei expect some select few???

i have watched all the major series in this genre like mosuko tensei , re:zero and SAO they were one of the best anime i have watched in a while but when go to see other anime in this genre it is straight up garbage or stuff only pdf's see like introducing a character who is clearly a child but saying she is some 10000 year old being . it is frustrating and should be a crime . i know some popular series are not immune to this type of fan service but at least there story covers for that .