In This Life, The Greatest Star In The Universe - Chapter 5:

[Female Protagonist Synopsis]:Mia Ginger experienced a trial marriage.Before the trial marriage--Dad said: “Koa Jackson is a postdoctoral fellow, watch your words and deeds.”Mom said: “Since you don't like him anyway, why not let your sister have him.”Brother said: “Shameless, stealing big sister's beloved.”Sister said: “Why didn't you come back a month later!”Mia Ginger didn't understand, she was already seventeen years late, late enough that the whole Ginger Family completely forgot her existence, late enough that the adopted sister occupied seventeen years of affection, late enough that the man she was betrothed to almost became someone else's groom, how much later should she be?Mia Ginger curved her lips: “Grandpa Jackson, I will strive to be worthy of Brother Jackson.”She thought it was out of spite, unaware that upon meeting him again, she discovered he was the big brother lingering in her heart for nearly ten years.At two years old, she got lost, falling from a Rich Family's Daughter to a street beggar, picked up and raised by a masseuse for seventeen years, and upon returning home, she was determined to become the first socialite in upper-class society.[Male Protagonist Synopsis]He is Koa Jackson, the third son of the Jackson Family, elegant and upright, with outstanding looks, the youngest neurosurgery professor in the domestic medical field, known by all.Simply because, at twenty-seven, he remains single.All young ladies want to marry into the Jackson Family, unaware the nobleman was betrothed since birth.In his entire life, he need only remain pure, waiting for one girl to grow up.Before the trial marriage, Koa Jackson had seen his future bride twice.The first time, he was eight, she was eight months. He stood by the bed watching her crawl with her little bottom, finding it amusing, he wrote his name on her sole and said with a smile: “Brother will stamp you.”The second time, he was eighteen, she was ten. He stood by the road watching her sneakily stealing, feeling pity, he took her hand and gave her a hundred yuan, helplessly saying: “Not stealing is a good child.”He's always remembered the first time, long forgotten the second.Unexpectedly, the little girl whose foot he tickled at home always regarded the second time as her life's salvation.[He couldn't partake in her turbulent past, but wholeheartedly takes on her prosperous future; companionship is the most touching confession.]

Transmigrating to a parallel universe, Ye Xiao’s spiritual and martial arts skills were awakened. He became a librarian in the martial arts library and awakened the Golden Book Divine Soul.

The servant looked at the grieving princess. “Your Highness, the Regent Prince sent your scholar fiancé to the Western Butcher’s daughter!” 

The princess gritted her teeth, speaking to her servant that it matters not as she has other suitors in line. Many days later, much to her dismay, the servant ran in a hurry. “Your Highness, the Regent Prince expressed his intention of becoming your suitor! All other men in line were sold to Gou Lan Red District!”

The princess was distressed. She said to her servant it matters not. She’ll soon be married to Prince Fuma. Then the uneventful came. The servant once more ran to her, almost tripping in the process. “Your Highness, Prince Fuma was imprisoned at home! Meanwhile, there’s a red sedan chair waiting at your residence for your marriage! It was led by the Regent Prince!

The princess was stunned. For a day such as this to come, it seemed impossible. This nothing but a sad story of a female boss crossing back in time to hold the thick thighs of the big boss. But while raising him, she was eaten in the process.

- Description from Novelupdates

Arakawa Kouki is reincarnated to a Japan with a different history than the Japan he knows with the memories of his previous life still intact. Kouki was discouraged, “Aren’t reincarnation stories supposed to be at some fantasy world filled with swords, magic and elves?!”