@Mizumachi @Allen133194
Well, there's truth to what you're saying. There is no conflict, and as such the protagonist doesn't really have to do anything, so there's nothing wrong with what he's doing (though he should at least try to learn the language, or try to find some other means of communication; his lack of agency is depressing (sure, he tried to do some stuff like you pointed, and Mary stopped him, but they're all minor things and nothing really relevant)).
But that doesn't change the fact that Mary is literally carrying the story by herself. Remove her, and I dont think there will be many readers who will stick around. Is it too much to ask for a protagonist that's interesting? One that, even if Mary was removed, the story would still be interesting and engaging? Not necessarily someone powerful, or resourceful, but at least someone with a personality, someone whose qualities don't only amount to being harmless and having no ill will in him (it'd still be a slice of life, the theme of the story wouldn't change, but at least we'd have an interesting protagonist). I mean, I understand where you're coming from, but I still see don't see Ren ( I think that's what he's called) as protagonist material.