Sunyu of the Shadowless

When failed martial artist Kwak Noh is tasked with protecting a group of young orphans, he plans to send them off to good homes. However, after growing attached to the children, he decides to raise them all as disciples of the Shadowless Clan. But as times get tough, Kwak Noh is forced to journey far from home to make money, leaving Sunyu, first brother of the clan, to provide for his siblings. If Sunyu wants to step up for his clan, though, he'll need to step up his skills! Training begins now!

(Source: Tapas)