Wait so that means the MC is a clone and she's researching a way to extend his life? If it's true that he died and this is just a clone then this is one hell of a plot twist.
Double chapters back to back?? Is it Christmas already!? Poor Papapan, first the queen got conquered then the queen cosplayer and now his wife.
The plot right now reminds me of Isekai NTR. Though in this one it seems like having sex is second nature to the pole master.
Honestly, I am now expecting this manga to go in the direction where Kenji accidentally gets his gender changed and that allows our ntr chad to plow his best friend.
Now it wouldn't be ntr isekai without ntr. So while they're fucking it's revealed that kenji has a girlfriend on earth but...