The death of his parents could have been a set-up for a kuudere trap(which would be very cute) who is dead inside, and trying to find happiness through crossdressing.
I probably just accidentally guessed the entire series🤔.
@BalrogDeMorgoth
He is in a different body now compared to before, and his objective is different from before so maybe that's why he is not interested anymore. Also from skimming the first two chapters it seemed like the MC originally spoke french but could also speak Korean as a second language.