I want to kill my wife in a dungeon

Matsuyuki, perfect at housework and cooking, is the ideal husband. However, he has a secret: he wants to kill his wife, Azalea! Matsuyuki, who has been playing the role of the ideal husband in pursuit of Azalea's vast inheritance, puts his plan into action on their third wedding anniversary, staging an "accidental death" in a dungeon. But at that moment, Azalea, who was supposed to be in a contract marriage, says something. "Yuki-chan, I love you." His target is 800 million 《Seeds》! Can he kill the one who loves him for the sake of the one he loves? The dungeon romantic comedy about a wife-killer begins!!