this is getting more bland and repeatable, imo the author should keep the psycho- messed up concept to the end instead of leading the story into the same old scheme of blushing and falling in love with the abuser because the victim somehow discovered a new, good side of his torturer, who will most likely go tsundere mode at the end, and will not admit his true feelings. I like twisted stories because for me, they are more unpredictable and emotional than the regular fluff etc., so now I am kinda dissapointed with the plot's development. :[
imo Natsuo doesn't love Hina nor Rui, he's just an immature, horny, selfish bitch. It's kinda obvious that most ppl would physically react while being touched, but if you love someone u would not die to fuck anyone who's near, especially your lover's sister, your friend etc. c'mon