Mutation

Ryu sank into a deep state of meditation, relying on the golden moon world. It was times like these that he missed his Mysteries of Heaven and Earth Pupils the most, but there was nothing he could do about it. Right now, his priority was to retrieve his Spiritual Foundation. As for his eyes, they seemed to naturally grow better as his cultivation increased. 

A slight gust of wind rushed around Ryu before it settled in an absolute silence. 

The Shadowlight Body required etching tattoos onto ones body. Of course, these tattoos were actually powerful Runes that would cause an effect of tug of war on the body. On would have to both be able to withstand the power of the Rune, while the Rune would likewise fill you with untold power.