@Dist, in a way, I agree with you. that's why I made this comment in episode 14:
http://forums.animesuki.com/showthre...01#post3681201
whether Daru is Suzuha's dad or not aside, there are also a bunch of other things which seem too clever. but still we have to have to give the benefit of doubt, even when the justification seems weak...... and I think this is only the 3rd or 4th comment I've made for the anime.