MTL - Happiness Consist in Contentment - v18 Chapter 6

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.

Ding!『You have acquired the skill: [Universal Language] – All tongues shall now bend to your understanding.』『You have acquired the skill: [Dimensional Exchange] 』『Item Detected: [Gold Coin x50] 』Initiating Currency Exchange…Exchange Rate: 1 Gold Coin = $1,000 USDConverting [50 Gold Coins] → [$50,000 USD].....Kael Lancaster grew up believing his family was ordinary—until he discovered that his estranged grandfather, Theodore, was a multi billionaire.Struggling with his family's debts and uncertain future, Kael decides to approach his grandfather and move into the Lancaster estate, becoming the old man's caretaker. For two years, he endures the family's contempt and Theodore's cold indifference, clinging to the hope that his loyalty will one day be rewarded.But when Theodore dies, the will delivers a brutal blow: Kael inherits nothing.Or so it seems.However, His grandfather had left him something else.A portal through which he could travel to another world—Kael can trade between worlds, amassing power beyond imagination.

[Warning: Mature content, lemons, comedy, MILFs, NTR, and a villainous protagonist!]_____[Ding! Congratulations, Villain! Your survival chance is 0.01% unless you NTR every hidden boss in this world. Start now or perish!].....James Tanner’s life could be summed up in one word: boring. After barely a week of being a rookie cop, he met his end courtesy of a speeding red sports car.But death wasn’t the end. It was just the beginning.When James woke up, he found himself in Aurendral, inhabiting the body of a rich young master who had spent years blind due to a mysterious condition.Fortunately, the blindness vanished when James merged with the body, leaving him with perfect vision—and one massive headache.[Ding! Issuing First Death Mission: NTR the hidden boss in this region within 90 days… or perish.]What choice did he have? Forced into the role of a scheming villain, James Tanner was about to shatter conventions, steal hearts, and become the strongest and most fearsome seducer this world had ever known.Because if he was going to be a villain, he might as well be the best.[Note: MC takes other guys' women, they don't take his.]

Ye Muyu, an elite of the modern company, got married and had children directly after time travel. She became the lady of an ancient scholar and the mother of two children, and she also found out that there was a “sister-in-law” who hated her very much.

Not only that, but there is also a ‘reborn’ female supporting role Tang Rou who covets her position everywhere.

Tang Rou: “Your position is mine, and I will be the first-rank madam in the future.”

Ye Muyu looked at the dark-faced man in front of him, and nodded calmly: “Okay.”

A certain man instantly protected Ye Moyu: “You It’s my wife, don’t even try to get rid of me, idlers, get out.”

The son hugged Ye Muyu’s thigh: “Go away, my mother is so nice, if you dare to bully her, I will bite you to death.”

The daughter held Ye Muyu’s arm Arm: “You are a bad person, my mother is the best mother in the world, if you dare to speak ill of my mother, I will report to the police.”

Seeing the happy family of ‘Ye Shi’, the reborn Tang Rou secretly hated her Grinding: It shouldn’t be like this, everything has changed!

- Description from novelbuddy