Refining the Dao into Godhood: A Tale of the Jie Sect - Chapter 366 - 304 [Creation Pillar, Reverse Space-Time] (Seeking Subscription)_3

Back to the end of Ming Dynasty, he was reduced to a slave.

This emperor, a beggar can do it, a slave can do it, a bandit can do it, but a house slave can’t do it?

- Description from novelbuddy

A boy wakes up with omnitrix as a X-GENE

A skilled but unfortunate modern-day assassin was killed in a freak accident. However, he soon found himself summoned to another world by an evil wizard, who had him possess the body of a boy as an experiment. After successfully planning the evil wizard’s downfall, he used the wizard’s body as a springboard to gain influence and power in his new world.

- Description from Novelupdates