Nano Machine is a Manga/Manhwa/Manhua in English language, Action series. English chapters have been translated and you can read them here. You are reading chapters on “nanomachinemangafree.com” fastest updating comic site. The Summary is

Nanotechnology meets martial arts at the Mashin Academy. Yeo-un’s mother may not be one of the High Priest’s six official wives, but his father’s blood still qualifies him for a chance at the position of Minor Priest. Will a mysterious nanomachine injection from a future descendent help Yeo-un in this fierce competition against his powerful half-siblings?