One Piece: Fist of the World - Chapter 57: Partners and Training Manual

After Cen Si Miao died, she followed the system developed by Jin Jiang and the local government. As she went from place to place, her skill at digging holes for others to fall into became better, and she became more familiar with saving the male protagonists. Pa, pa, pa, face slapping became more even satisfying. But still, somehow she always got carried away by the male protagonist in the end.

- Description from Novelupdates

Her step-sister just died three months ago. Now, she insists on marrying Chu Lui, who is supposed to be her future brother-in-law, the mind behind the Chu Enterprise. The world is sure that she, the new bride-to-be, had caused her step-sister’s death in order to seduce him.

An Individual from Earth finds themselves in the Shinobi World, equipped with a Scientific System. From that moment, he delved into scientific research far ahead of its time.

As soon as she fell into the world of beastmen, a leopard forcibly took her back to his home. Indeed, Bai Qingqing is at a complete and utter loss. The males in this world are all handsome beyond compare, while the women are all so horrid that even the gods shudder at their sight. As a first-rate girl from the modern world (she’s also a quarter Russian), Bai Qingqing finds herself sitting at the center of a harem filled with beautiful men — at the very peak of existence.