Koishite Daddy
I gave it a three for several reasons... yes, the art is so cute and the story is mostly sweet, but... In the first place, Rin shouldn't have to choose between he's mother (even if she sucked as a wife because she cheated) and his father's lover, even if he liked Natsuki. On the other hand, I didn't quite like Saitou-san, because he was so quick to anger, he first exploded to then ask for forgiveness, which I very much hate. Also, he didn't seem to notice anything until it was explained to him (this in regards of his son and of Takahashi-kun). So, except for those times when he was being a reasonable man, a sweet father and a kind lover, he annoyed me very much. And one more thing. If you're going to meet your lover's parents who have trouble accepting his sexual orientation, the best you could do is call him a PARTNER instead of BRIDE, or so I think.
Gochisousama