Happy Marionnette

Ayane Imagawa, a nurse who is threatened by a stalker, moves into a shared house run by her colleague Tajima, which turns out to be the base for all sorts of unscrupulous operations. His dark agenda will take advantage of the emptiness in Imagawa's heart, devoid of friends and relatives, to quietly but steadily take over her life… The story of a lonely woman's descent into corruption begins! (Source: Tonari no Young Jump, translated)