I believe that it is the bad translations that make this story a mess right now. The fact that it wasn’t confusing before proves this story’s potential!
Everyone is surprised of his height and yet 5’8 is an average height of a man + he’s a young man still growing, he’s not a girl who’s stopped growing after their menstral cycle. I would be shocked if he was 5’3
The novel did it the best but the anime did a fantastic job at making the last chapter really sad. The manga made it really anticlimactic :,( shame