MTL - Konoha: Rebooting Life of a Medical Ninja - Chapter 36 Mermaid swim together

He became a teacher at the best magic academy in the empire.
….For being mistaken for someone else.

The Ye family’s foolish girl is reborn one day!With an omnipotent divine cauldron and a spiritual space in hand, she is no longer the good-for-nothing, abandoned girl that everyone bullies at sight!She is so invincible with both medicine and poison that even a divine doctor will be nothing beside her, Spiritual beasts beg her to make contracts… Oops, excuse her, even the Beast God calls her Boss.When her scumbag father dares to abandon his wife and daughter, she wrecks and destroys his family.When people dare to bully or humiliate her, she would return that favor a hundred times greater.Reincarnated as a human once more, she returns like a powerful sovereign. However, she never expects to be involved with the devilish and bloodthirsty him.Originally meant to be a decisive Ghost King, he ends up reincarnated into a ditsy, cute and harmless hostage prince in a neighboring rival nation…

Host: What is your dream?Lv Xiaobu: To eat and do nothing, to do as I please.Host: Then how did you become the world's richest man?Lv Xiaobu: How would I know? You ask a spendthrift how to make money? Really! I want to go back to sleep.Host: Please don't...Lv Xiaobu: Tip, five thousand.Host: Kneeling and sending off Young Master Xiaobu, may Young Master Xiaobu rule the world forever!Lv Xiaobu: Wahahaha!

Pausing time, turning back time, reversing times of specific objects/person, and even predicting the future…

Taking advantage now that Su Lin has control of time within his grasp. Being able to stop time; can dodge incoming attack and avoid mishaps, Su Lin is steered clear of harm’s way. Reversing time; can forever never regret, no need to overthink when acting. Inverting time of specific object/person; can repair any object and heal any person, Su Lin becomes a miracle doctor. Predicting the future; can hide from natural disasters, can buy the winning lottery tickets and stocks, listening to Su Lin is always right.

- Description from Novelupdates