One Piece: The Soul Purchasing Pirate - Chapter 309: Banshō Ten’in!

This is the novel behind the TV series, “Love Like the Galaxy”.
The following synopsis is based on the TV Series.

“The young Cheng Shaoshang was left behind because her parents had gone off to fight in the war. In order to protect herself from her scheming aunt, she had to be extra diligent while pretending to be the opposite. However, years of estrangement have made it difficult for them to become family again.

Lacking love her whole life, Cheng Shaoshang is both pragmatic and insecure in choosing a partner for marriage. She encounters three men – the emperor’s adopted son Ling Buyi, the talented Yuan Shen of Bailu Mountain, and the aristocrat Lou Yao who each have their pros and cons. Although the road to love is bumpy, she never regrets every choice she makes. Through her interactions with Ling Buyi, she unintentionally becomes involved in the mystery surrounding his family and his identity. The two grow from their experiences and worked together, upholding the righteousness in their hearts to resolve a national crisis.”

- Description from Novelupdates

On their first wedding anniversary, she almost had a miscarriage after a fall, while Fu Yanshen anxiously carried another woman into the hospital. It was at that moment Mu Chenxi realized she was just a substitute. Four years of tender love had all been a lie. For the sake of her child, she wanted to give him another chance. She waited all night, only for him to stay out until morning, returning with traces of another woman all over him. Her heart turned to ash, and she thrust a divorce agreement into his hands, “Fu Yanshen, let's get a divorce.” That was the moment Fu Yanshen truly panicked.

A teenager who unexpectedly gets transported to the modern world from ‘the world of the immortals’ . He finds himself in the body of an ordinary guy. He wants to go back to his world and for that, he will have to practice to get stronger and investigate the reason why and how he crossed through to this world.