Naruto System in One Piece - Chapter 149

Before death Qin Tailong left two magic tools to his son, Qin Dong. In his father’s last words, Qin Dong realized his father had been murdered by Lord Wanpeng, who coveted one of the family magic tools—mystic chaos ring. Bearing the hatred in mind, Qin Dong swore to revenge against his foe. He escaped to the mortal realm temporarily, continued to strengthen his cultivation base and studied the secret hidden in the seals of the ring. While reveling the secret, he found five ladies were the key to the release the seals. Their romantic relationship with Qin Dong was established the moment he was born.

- Description from Novelupdates

Evan crossed over, but he wasn’t worried at all… because he had the character template from the mobile game and five devil fruits obtained from a lottery draw with him.

Qiao Qingyu found herself transported into a period novel, becoming He Xiu Yu's dreadful ex-wife.She's the worst of them all—lazy, dumb, and wicked.She serves as a foil whose sole purpose is to advance the plot, a tool for slapstick comedy, and a contrast to highlight the intelligence and kindness of the female lead.Everyone is eagerly waiting for her to exit the stage.Faced with dangers ahead and behind, Qiao Qingyu isn't bothered at all. After all, she possesses a seed laboratory.The joy of having a golden finger is beyond your wildest imaginings!

In the 21st century, divine physician Qian Jiujiu was targeted by a bomb when she was rescuing soldiers in the battlefield. Because of the bomb, she crossed the to a new state and became the second daughter of concubine in Qian familiy. Because the taoists asserted that she would “curse parents”. Therefore, she was sent to village outside capital for 16 years not long after rebirth. This time, her father took her home, just to let her marry Mu Yexiao instead of her lineal sister.

Who is Mu Yexiao? The sixth prince of the state, the favorite prince of the emperor. Because he was injured in the battlefield, his legs were disabled, and he was unable to bear children. In anciet time, he also failed to seek effetive medical treatment. The royal family decided to marry the legitimate daughter of Qian families to Mu Yexiao, in order to drive away bad luck.

However, as a modern doctor who combines traditional Chinese and Western medicine, Qian Jiujiu won’t obedient to fate? She used her wonderful medical skills to heal the Mu Yexiao’s disabled legs, hoping this prince could support her. But who knows he was very shrewd! Who yielded to whom? It’s difficult to say.

- Description from Novelupdates