[ムサシマル] 誰そ彼（Chinese）

Wow, talk about fucked up

Bloody heretics with no respect for the fallen. Death Angels are going to be pissed

So basically the father raped and trained the cousin he liked into being a masochistic nympho, and now that the father's dead the son has inherited her as a sex slave. At the end they say the "I'll be in your care" bit that japanese people do at the start of a relationship.