Adult PC Game: Moving in with My Step-sister - Final by Makai "A" Business Office Archive

Overview:
After graduation, I lived alone in a big city, far away from home, in order to pursue my dream.
In contrast to the hustle and bustle of the big city, my daily routine and work were always the same, split up by nothing but a daily commute between home and the restaurant I worked for.
I thought I'd just live a quiet life, plain as water, until one day I got a phone call...