EXACTLY! THE ONLY WEBCOMIC/ NOVEL that actually utilizes his past life is Cale Henitus from Trash of the Count's Family! Everything happens for a reason! And all of it just fits into place! I'm tired of isekais' being isekais' ONLY because they read a novel that tells in inaccurate future!
Yeaaaaa that my baby Cale!!! Trash count is the best I also love how everything is connected and how it all merges together both from earth and his new life in the story ahhh its so good!!!!
OMG YES I LOVEEE TTCF novel currently waiting for updates !!
but does everything have to be an isekai? Sometimes it really isn't needed.