tartarin

The point is incestuous relationships were forbidden because they lead a higher probability of genetic defects in the offspring. They were also forbidden if they are not consensual like any other sexual relationships.

Clearly dating your daughter isn't consensual given the imbalance of power at play. That's also why pedophile relationships are forbidden.

Unless they can reproduce, I don't see the issue here.

Probably another "Japanese" stealthy tactics.