[K Peculier]

I don't see any particular issues with this request. You're free to roleplay it as you described.

Considering some players already utilize something like this with Ki Awoken and Death Knighting skills there shouldn't be anything to argue too much about. As well as seeing as there is some drawbacks to it versus being a straight up free power-boost.

You're definitely also free to roleplay the cursed blood trait like this as well.