If you've ever read or or heard of the web-serial Worm, you'll know what I mean when I write that this is basically Heartbreakers power. Which is effectively mind-controlled love? How could you be certain of the sincerity of anything any-one of the harem members says about ANYTHING at all...
Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn
https://vignette.wikia.nocookie.net/lovecraft/images/a/a6/The_Yellow_Sign.jpg/revision/latest?cb=20161006134025
(p.s Just a joke, I'm not actually going to sacrafice us to the outer ones...)
The novel of this has over a thousand chapters with each chapter having around 6-8 pages varying on the the arc. So we're in for a long, long ride on this one folks.