It all began in a planet away from earth, called solarus, known as E-93, that planet haves many weird creatures and many weird hybrids, including human shaped creatures, with bird wings, having a name called an angel, but there was kinds, there was also a demon, very different from an angel. Those kinds have never liked one another, they were always at wars, fighting and losing beautiful souls, in all generations. They were taught how they could be seen as an enemy and approaching one would be so dangerous. but sadly, not to hyunjin nor Felix.