Dragon Ball Roshi - Chapter 26 - : Muten school (Part 1)

Liola—the best assassin in his world—has vowed to kill no more. He was being chased by an assassination organization when he accidentally dropped into a parallel universe: through a dimensional gate and into poor teenager Kaiser’s apartment. Instead of going to the government shelter for lost dimensional travelers, Liola and Kaiser wind up going to school together.

Liola has been trying his best to live the life of an ordinary person, but after certain things happen one after the other, he begins to realize that being an ordinary person could be harder than being an assassin.

Starting from today, I am retired. But what should I be doing? I neither have the skills, nor the mind to do business, my only advantage is this pair of hands which have taken this world. What a headache…

Note: The usage of the term “retired” here doesn’t mean retiring from old age, work etc. It’s a specific term to refer to not involving oneself in the affairs of a certain society.

With the Goddess’ blessing, he became a 『Divine Knight』 and founded an Empire.
As time passed, he grows older, and by the time the heavens called for him to come, the Goddess showed before him, asking for his last wish.

He wished to be reincarnated in the future.
He dedicated all his life for his people, he had no time to master his own arts.
This time, he wishes to live for himself, forging his body to the utmost limit.

The Goddess complied with his wish.
In the far future, the King shall reincarnate as the 『daughter』 of a renowned Knight family.
And, under some circumstances, she is labeled as a failure of a Knight, however——

「How convenient. I can stand on the foremost line without needing any rank. No better training than actual combat!」

Thus, the legend of the world’s strongest, most beautiful Knight Disciple (♀) has begun—

High society CEO Big BOSS Lu expresses that he’s felt stifled recently. Ever since a woof style creature intruded upon his home, his life has become a complete mess. A slight conflict in opinion and his couch is hijacked, his desk seized, his lap forcefully occupied, even his bed was forcefully dominated!

The small Sammy, with his head resting upon his waste removal official’s thigh and four paws facing the sky exposing a soft little belly, with a face full of untainted purity and a pair of innocent eyes: “Woof~”

Big BOSS Lu lowers his head and makes eye contact for three seconds : “…. Give give give! Whatever you want, I will give it to you!”

- Description from Novelupdates