High-schooler Matsuzaka Satou has a reputation for being easy, but one day her lifestyle of sleeping with one boy after another comes to an end. It happens when she meets the child Shio, for whom she is convinced she feels true love for the first time. Satou may seem sweet and innocent, but there is nothing she won't do to protect their life together, including committing murder. But from where did she acquire the little girl, and how long can their "Happy Sugar Life" together last? (Source: MangaHelpers)

Happy Sugar Life
This is a shivering pure love psycho horror story of a girl named Satou Matsuzaka, who has someone she likes. She experiences a sweet feeling when she sleeps with her, and thought it must be love. Everything will be forgiven as long as she protects this feeling, even if she tricks, commits crimes, steals, or even kills, she thought.