Transmogrification

Althea, the galaxy of mystical wonders. Wisps of magical energy spreading to other galaxies, being the sole source of humanities fantasy.

Kain Khorne, a 21st century boy born of unfortunate circumstances, is reincarnated after life begrudgingly ends his pathetic existence.

Born in the body of the ever-changing Jargon, a shapeshifting monster with an uncanny resemblance to the fabled shoggoth, Kain is forced to adapt to his new environment, overcome the odds, and reach the peak of his world, enjoying his semblance of life along with it.

This is Transmogrification.