Review Detail of Hansel_Mieres in The Supreme Satanic System

Hello, can someone tell me if the protagonist's aunt and adoptive mother has a relationship with the protagonist's superior or not? The doubt is that this freaks me out, come on, if the author wants to put in more development, he can well make this one the protagonist or leave her alone, he doesn't have to let the main character's superior fuck her. I ask the question since I am in the first chapters and that has me out of the wave for what I would like to know.