GEMIS

Gemis, a boy who grew up on a remote island in the middle of the ocean, dreams of going out into the world where other races live. One day, orcs attack the isolated island!? What's more, they demand that the experimental subject, Gemis, be sent to them, and a shocking truth is revealed! Was the love he'd received up until now a lie? And who exactly is he? But Gemis, who still believes in love, is transformed! His appearance changes and he gains superhuman powers. Carrying his destiny, Gemis fights against the world for what he believes in. This is the start of an incredibly intense transformation battle fantasy!

(Source: Starts Shuppan, translated)