He is so freaking obsessed with his step father, he even took his ring and threw away and ...

He is so freaking obsessed with his step father, he even took his ring and threw away and even sexually assaulting him in front of his father’s photo , like other two chapters is just him fucking him.
Have the writers started this fetish getting from Asian drama on pseudo incest as it’s like an trend nowadays they promote wise, I mean still it can be good story with age gap but with related it’s not gonna nice way, even the son objectified his step father and starting to rape him continuously.