First of all, this doesn't make sense but it's funny
This reminds me of a weird children's book that doesn't make sense but cute anyways ┑(￣Д ￣)┍
Police uncle, assassin mother, spy father, psychic daughter.. Will this gets even more interesting?
The parents were aliens
they came from area 51
normal aunt that gives off the aura of an extremely dangerous person
"Even for a spy, i quite like her."
Lol. Falling already?
That ancient taboo thinking is really...
I can see y though. There is an imbalance of power. it would be like a teacher sleeping with their student. It can lead to abuse, and so is considered unethical.
Also in china master = taking on a father/ mother role... So to them it's kinda like incest... Also it's especially understanding when you consider the fact that most masters are significantly older than their disciples.