because of the shit the mc goes through and the plot twists. did you read all chapters?? and he doesn’t try and save one girl. there’s multiple people he wants to save. don’t wanna spoil tho.
Oh well, something so "simple" can be made into something interesting and developed into more complex stuffs ;). But, well, it's all about taste, can't really blame you
I don't understand why is this so popular even though the purpose is so simple like just, only to save one girl.