Maaan i really hate that commander guy, and i stil couldnot understand why it needed to be isekai or genderbend and why both. Couldve been a low fantasy ww1-ww2 war story about an orphan healer girl
I bet the commander guy is the type of guy that has those sad back story and doesnt like getting too close to his troupes because he know itll only torment him more if he gets to know them better, he thinks the lives lost because of him and the hate he gets is deserved and will take things to hell once hes finally dead, probably has a death wish too.
EDIT : i couldnt type well and i didnt put the could not