Number One Lazy Merchant of the Beast World - Chapter 19 - The Housekeeper’s Anger

Despite being betrayed by her boyfriend, the neglected heiress Lariette Elsher is still forced to marry him – all because her family wants to appease the fake daughter. The one she was switched at birth with.Screw this! She's done playing nice!Devasted and enraged, Lariette seeks her friend's help – to pick the best man at her butler cafe to be her contracted husband.Enter Ruediger Alvord, infamously known as the poor outcast of the Alvord family, the Elsher's family nemesis. He proposes to be Lariette's partner-in-crime, to wreak havoc in both families.While Lariette is busy getting her revenge, she fails to notice her contracted husband's strange behavior. She also fails to recognize him from a distant past.Before>Ruediger: I have nothing much on my name but, I can be a good househusband.Lariette: It's okay. I can feed you.After>Ruediger: Do you want that house? It's nothing much. Only one billion.Lariette: Aren't you just... a househusband?Since when is her husband a billionaire?!

The dawn era after the end of the half century has gradually rebuilt the order, abandoned civilization, and is full of undivided violence and desire.
The noble and powerful pioneers are in charge of the city, and the evil and mad plagues are in the wilderness.
Pure human beings who cannot mutate are the weakest, dominated by the rulers of the pioneers, and are not as good as animals in the wilderness.
A purely humanized young man with a worldly experience has quietly entered the WTO, holding a three-foot long knife and a long-distance desire to boil in the world of purgatory. From the nameless name to the sorrow of the Supreme Court, the name of the black ride is resounding!

- Description from Uukanshu (translated)

When The Cute Kunoichis Spied on Their Teacher's Secret is a light novel written by Kazuma Kamachi and illustrated by Ryuushi Tajima.

The story takes place in a world where Japan never ended their isolationist phase, and agents from foreign powers are always threatening to steal the country's advanced technology. In order to combat this threat there has been a resurgence of ninjas that use Strategic Martial Arts, techniques that combine cutting-edge modern technology with a traditional foundation of martial arts and ninjutsu. The story follows Souha Sugiyado, a 17-year old ninja instructor and former ninja prodigy who was forced to retire from active duty by the wounds he suffered in his last mission. Souha's four students are all kunoichi who have all gained the rank of Elite Ninja, the highest official rank available to ninja. However, one day two Shogunate ninja approach him with the news that his four students have gone rogue and have stolen a portable modular nuclear reactor, and thus they ask for his help in bringing his students to justice.

As a virtuous wife, does it include tolerating his cousin, enduring his concubines, bearing his mother?