Jack's eyes starting have a tinge of black, and soon the black color surrounded his body. Black lines covered Jack's body, and his veins glowed in crimson. His crimson hair started slowly growing longer, and soon it reached his shoulders.
''RAAAAAA!'' Jack shouted madly and gritted his teeth.
The golden ground below him started melting away, and Jack's body started turning in crimson color, almost looking like he was burning inside.
''HAAA!'' Jack breathed out smoke.
It didn't only look like he was burning inside because he WAS burning inside!
A mysterious core inside Jack's body started spinning faster than ever before!
''PHEW!'' Jack took a deep breath, and slowly a pair of horns pierced through his skull, ''ARGHH!''
A pair of horns glowed in crimson color, and it made Jack's look even more demonic.
''D-Demon...'' God Aerion murmured with a shocked look.
''Whew...'' Jack's transformation was over.