Happy Marionette summary:
Ayane Imagawa, a nurse who has been suffering from a stalker, moves into a shared house run by her colleague Tajima, but it is actually a base for an unscrupulous multi-business.
The black agenda that takes advantage of the gap in Imagawa's heart, which has no relatives, is quietly but steadily eating away at her life...
The story of a lonely girl's sinking in a corrupt business begins!