My Happy Family [Ch. 2 Intro Part 1]

Overview

My Happy Family… Is an VN-Story-Game-Thing that centers around an MC who had just returned from a month long vacation away from his family only to find that the dynamic of his family suddenly changes. Without warning he returns home to find that his mother had gotten herself a new boyfriend her first “real” boyfriend since her separation with their father. In the short time that he’s been gone the boyfriend had moved in.

While the house itself remains the same, the dynamic of his family has shifted, before he left his younger sister used to rely on him for everything, now she barely seeks him out for anything. It seems that this new boyfriend had taken that place. Now hanging on the boyfriend’s every loving word, the MC can’t help but feel that this man has taken the place of their nonexistent father in her heart.

The MC’s twin sister, who had always been a constant bitch to him and everyone around her seems to have also tempered her anger.
Once showing unreasonable anger at every male she came across now obediently listens to the boyfriend.
Like their younger sister, she too seems to hang on his every word,
but unlike the younger sister it seems as if their relationship is more… Authoritative.

Can the MC find out what’s changed in the short time he’s been gone?
Should he find out what’s been going on or should he just accept that change is a good thing.
If mom is okay with the change, then maybe so should he.