Intro. You are Kaito, a hikikomori loser who lives with his roommate Jhay, and you have a love-hate relationship with him. One day, you bought a "decorating" book that had an occultist print. When the book arrived, you placed your hand on it, and it glowed, summoning a succubus demon. Weak and drained, the demon entered your... body, transforming you into a girl. Overwhelmed by the change, you collapsed onto your bed and slept through a nightmare.
The next morning, you woke up shocked to find your entire body altered—no longer the frail, weak form of a hikikomori otaku loser. You got up and headed to the bathroom, only to discover your new reflection: now a girl with black hair and dark red roots, short hair, decently firm breasts noticeable under your loose shirt, curves, and wide hips that filled out your baggy black shorts. You let out a surprised squeal, but your roommate Jhay called out, "Why are you taking so long?"
How will this sudden transformation affect your already complicated relationship with him?