MTL - Gold Lord is Very Busy - Chapter 9 .

The eternal night is coming, and the killing ground descends.Gods fall, and a hundred ghosts parade at night.You can stand in the forefront and announce the arrival of the era's tide to the world, or you can hide in the darkness and coldly observe the struggle of others to survive.Liberate your thoughts, embrace your destiny, this is the absolute real game, this is, Earth's Killing Field.

Once through the pirates, Lu En became the son of Monkey d Dragon, a grandfather named Monkey d Karp, and an unreliable and neurotic younger brother named Luffy.

Fortunately, the ghost back system is activated!

The completion of the ghost back is 10%, and the training effect is increased by 100 times!

The completion of the ghost back is 20%, and the training effect is increased by 1000 times!

…

One day, Lu En, a ghost-backed master, appeared in front of Luffy who was shouting to go to sea, and made Luffy cry on the spot.

Luffy: “The pirates in the sea are all monsters like my brother? I don’t want to go out to sea!”

Garp: “For a long time, the two boys, Long and Luffy, with small arms and calves, I really doubt that they are not my sons and grandsons. Like Lu En, they are the grandsons of the old man!”

Warring States: “The strongest creature in the sea, land and air is Kaido? No, it’s Lu En!”

- Description from novelbuddy

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.

Synopsis: 【Era + Rebirth + Educated Youth + Rough Husband's Devotion + Child Rearing】In her previous life, Su Xiaoxiao unwittingly led disaster into her home, resulting in the demise of her entire family through a series of “accidents.”Upon her rebirth, she vowed to make those who had harmed them pay a bitter price!She was determined to love wholeheartedly the vengeful Jiang Yexun, who was willing to squander his vast wealth and even risked his life for her vengeance.But there was a peculiar issue with her body – she couldn’t seem to control it.Whenever she was near Jiang Yexun, an irresistible urge for intimacy took over.Jiang Yexun clenched his teeth and said, “I've given you a chance to run!”Su Xiaoxiao embraced the man's waist and playfully retorted, “Run from what? A real man should act, not just talk!”Jiang Yexun pressed down on the provoking girl, “Alright then, let's act!”After marriage, Su Xiaoxiao, nursing her sore waist that hadn’t straightened since, tearfully recognized one undeniable fact – you must not provoke a rough-and-tough husband like him.