My Green Tea Nemesis Became the Child I'm Raising

The Zerg invaded, and during the battle, Fu Hanxi was blinded. In return, he broke one of the bugs' legs and made sure he'd remember the creature for the rest of his life.

Wounded and fallen from favor, Fu Hanxi was sent by the old emperor to develop some garbage planet. As an expert who could develop just about anything, Fu Hanxi managed to get by on the garbage planet, and even did rather too well. So bored was he that he picked up a pitiful, one-legged robot who had been loitering outside his door, and started him off growing potatoes.

That was until his eyes healed.

Fu Hanxi watched as his old nemesis grew smaller and smaller, until he became a human toddler with a mechanical tail. The guy Fu Hanxi had dreamed of strangling was now looking at him with clear black-and-white eyes. His tail swished, and he said softly, "Now that your eyes are better, don't be mad anymore, okay? Besides, you touched my tail."

Touching his tail meant you belonged to him.

Fu Hanxi looked at his mechanical tail, and his head rang.

You damn bug. Just wait until you're a little bigger. I'll kill you.

Moral: Resist as equals