I don't know how you'd get to that conclusion. Kairu isn't the alternative to the masculine ideal; he isn't weak, stupid, ugly, wrought with emotion or insecure. The fact that he's strong, good-looking, relatively intelligent in the game world, and sensible, makes him even closer to being a masculine ideal.
i think that Kairu is a breath of fresh air. he is a relatively normal guy who everyone can relate to. also he reacts naturally and believably to the situations and characters around him. He and Aurora really do act like brother and sister and Aurora is a hoot. if there is anyone in this game that gets on my nerves it's Isa.