Spend Money on Goddess, Use more! Gain more! - Chapter 165 - 138: Sister-in-law’s Mishap

After clicking in a online game and choosing Dragon as his role, Ron passes out and transmigrates as a true dragon in another world. The first crisis he encounters, however, is that his mom doesn't seem to like him.

The world that nurtured the civilization which reached the pinnacle of magic was on the verge of destruction.
The last survivor transmigrated to the past, when the magic civilization started growing, as countless mages were still fumbling their ways through the thorny paths of magic knowledge.
He, who came from the end of the magic era, aim to reach the pinnacle of magic.

- Description from Novelupdates

Ryoma Takeda was once a rising star in the ring, an Interhigh champion, a golden boy with fists of promise. But one bitter loss on his pro debut shattered his confidence. A freak accident soon after stole his leg.His career vanished. His fiancée left him. And all he had left were reruns of that one damn fight… and a hundred different regrets.Then, just as he hits rock bottom, fate does the unthinkable. He wakes up ten years in the past, on the very night of his first professional match.But this time, something’s different.[System Initialized: Vision Grid Active]“Your eyes see the truth beneath motion. Use it well.”Armed with the Vision Grid System, a combat-assist module that turns his visual perception into tactical mastery, Ryoma now has a second chance.To fix his mistakes.To chase the career he lost.To protect the mother he failed.And to prove to the woman who left… that she let go of someone she’ll never replace.But boxing isn't just a sport. It's war of bodies, of minds, of hearts.And Ryoma Takeda is done losing.

When the female support (cannon fodder) slept with the villain, they all had miserable ends.But what about when the female support changes to Xue Xue?The ending naturally becomes different.