One Piece : Roger Is My Vice Captain - Chapter 5 - Dead son?

This book is about baby-making.

Hunted for the Alchemical Book in her hand - Mu Ruyue wakes up in the body of a wastrel in Shenwu Continent - a martial arts dominated world.Her fiancé has jilted her in favor of her foster sister.Her father condones her abuse.Her younger sister wishes she was never born.And the whole country ridicules and insults her for being a first-rate wastrel.Wastrel? Not at all. With the Alchemical Book in her hand, what pills and elixirs can't she refine?Jilted? She'd rather marry the pure and innocent Ghost King, Ye Wuchen.----Mu Ruyue: Stop calling me Sister!Ye Wuchen: Can I call you Wife then?Mu Ruyue: Not that either!Ye Wuchen: (about to cry)Mu Ruyue: (sighs) Suit yourself.Ye Wuchen then leans forward and kisses the corners of her lips.Mu Ruyue: …Did a child just steal her first kiss?----Brother 1: Let her go!Brother 2: She is my mother, why should I let go of her!Brother 1: Don't ever think of robbing my mother!Mu Ruyue: Let me introduce you, Jing'er, this is your younger brother. Huang'er, this is your elder brother.Huang'er: Mother, this stupid boy bullied me. He's not my brother.Jing'er: Little guy, from now on, you must listen to me.Ye Wuchen: (How exactly do these two regard him? They dare fight over his wife in front of him...)

Magic finally reached planet earth, but it was not like we expected. It came in the form of mystic energy!

After the age of awakening, all living things finally entered the path of evolution.

Mystic Beasts invaded earth, destroying the world as we knew it, but we survived as we finally gained the ability to utilize the energy that the beasts came with.

Mystic Warriors were born, and humanity finally found a moment of reprieve, but the Mystic Beasts were still winning.

Rex Vector, an apparently mystic energy-deficient sword genius who lost everything to the war turned out to be the last inheritor of an Ancient Bloodline.

On fully awakening his bloodline he was granted a system and his whole life changed for the better.

Life held much more in store for him though as the contents of his first system mission revealed a reality to him that he wasn’t sure he wanted to accept.

[You are hungry!]

[You must drink human blood within 24 hours!]

[Penalty for mission failure: Death!]

When Ren Sheng is being hunted, in order to not fall into the hands of his enemies he decides to jump into the crack of space and time. Unexpectedly, he crossed into the future and was forced to substitute as a bride while he was still in a coma.

When he wakes up, he actually has a husband… Ren Sheng is extremely satisfied.

Such a delicious nourishment, this is his first time seeing it! Really want to root up ah ah ah!

As a result Lord Marshal, who was sick in bed, had a “little wife” who has been touching him all day and drooling over him.