Complex sentence: He also lusts after Oboro greatly and desires to take her for his wife in order to become the true lord of Tsubagakure, even if he has to rape her to do it-which he attempts at least twice over the course of the series.
Split into simpler sentences: He also lusts after Oboro and desires to take her for his wife in order to become the true lord of Tsubagakure. Even if he has to rape her to do it-which he attempts at least twice over the course of the series.