The MC is commendable for his transitive thinking . First mother then older daughter and now he's thinking about younger daughter. Man I'm seriously waiting for a 3some and 4some. With the amazing art it's gold.
I guess I am the only one feeling bad about the situation here? MC's friend is such a nice guy who convinced his mother to let his friend stay with them. And the MC is repaying him by fucking his mother and sister. Sad really.... I could not feel any arousal from this at all just thinking about this....