MARRIAGETOXIN Manga

Gero, a young hitman from a centuries-old clan, believes marriage is beyond his reach. He has never attended school and has spent his life working in the criminal underworld, leaving him convinced he has no prospects with women. When the clan fears its bloodline will die out, it tells Gero that he must marry and produce an heir—or his younger sister will be forced to do so. Desperate to protect her, Gero turns to a target of his work: a marriage swindler. Together, the hitman and the swindler embark on a grueling battle for marriage.