MTL - Douluo: My Martial Spirit is the Ten Fierce Sky Horned Ants - Chapter 712 , the first part of the Heavens and Worlds.

A young farmer's son, Oscar, is content with living a peaceful life, but by fate's whim, he is found to have the potential to become something greater, an Exalt. A special class of humans who perform miraculous feats and lord over others. Despite his shortcoming and slow progress compared to the geniuses around him, Oscar holds determination as his shield and persistence as his blade. Who says that a person needs to be a genius?Who says that a person has to be a prodigy?With each heavy step, Oscar walks the path of an Exalt.

To rise from defeat; to revive amidst the dissipation.

As we all know, the Department of Obstetrics and Gynecology at Jihua Hospital, which is affiliated with A Medical University has two deputy chief physicians who do not see eye to eye.

From their freshman year to their doctoral graduation and then to their training and professional title evaluation, Jiang Xu and Sheng Fangyu have been fighting and thwarting each other. It was like a case id, ‘if you don’t kill me, I will kill you’, ‘you get 96 in the exam, I’ll get 97 in the exam’.

In the end, they even fell for the same girl.

But who would have thought that before the two could even get into a fight, the girl took her girlfriend’s hand and actually came out of the closet in front of them? The two straight men, who had been at loggerheads for three months over the girl, had their three worldviews shattered.

The two enemies sat down to drown their sorrows in alcohol and in the confusion, somehow together in bed.

Afterward, Jiang Xiu got up holding his almost broken back. His mind exploded for half a minute, and he resolutely decided to forget about it.

However, three months later, he looked at the urine test report, touched his disappearing abs, and looked at himself in the mirror in disbelief.

“Ugh—”

- Description from Novelupdates

Crossing to One Piece world, he became Roger’s younger brother.