he politician basically. using others to do dirty jobs and make himself a savior and top chain of command.
he rather let people suffer and hungry so they had to follow him. he plans that if they get back to japan, those students will be his puppet as they because of him, they survive.
He did fuck all of them in the novel...
...but on the other hand the ending is really bad.
Hopefully they'll change it for the manga since they already changed stuff.
He's fucked literally every single girl in the web novel/light novel
Honestly, I kinda prefer that there's no sex. Hell, should go even further and make the girls not initiate things as blatantly and shamelessly as they did this chapter. It was completely out of place.