Marriagetoxin
:Yoda Mizuki, Joumyaku
:Alternative Title: Toxin Marriage. A killer and a blackmailer embark on the world's most brutal marriage battle. Gero is a young man from a centuries-old assassin family. Having never attended school and lived a dark life in the assassin world, he considers himself "hopeless with women" and believes marriage "is not for him." However, one day, fearing the family's demise, his grandmother warns Gero that if he doesn't marry and produce an heir, his sister will "do it." Using his intelligence and cunning, Gero asks his target, a blackmailer, to…