That kind of parenting should be illegal.
In fact, I'm pretty sure that even in Japan, it's not legal to beat a man up, with as justification that he's both male, and in close proximity to one's offspring.
Edit: to rephrase: parents taking control of the love life of their children in general should be illegal. And in fact a recent landmark court case in Germany ruled that parents have no authority to stop their children from having sex, provided that this be above the age of consent.