Original Webtoon
Official Translations: English, Simplified Chinese (Discontinued), Traditional Chinese (Discontinued)

Denma is a Quanx, a special breed of humans who possess unique, superhuman powers. Dike used to be an infamous space villain, but he was tricked by a beautiful woman and found himself trapped in the body of a child- and he's been forced to work as a space courier ever since to get his real body back.

Denma is a fantastic tale of myriad space adventures that Denma goes through, filled with spaceships, ESP, high technology as well as insidious conspiracies and heartbreaking romance, all coming together to present a wonderfully constructed futuristic society controlled by greed, lust, and desire.

Review
Review 2

Denkyu was originally a fanfiction following the end of Denma which was later picked up by Naver and turned into an official sequel.