Nekoya Shiro was an ordinary teenager until a chance encounter with a corrupted Animortis changed his life forever. In a moment of bravery, he saved a person but was stabbed in the process—only to awaken in a strange void where a glitching system greeted him.

[Heroic System Activated]
‘Congratulations, Nekoya Shiro. You have been chosen as the possessor of the 13th Animal Zodiac Sign: Phantom Cat.’

Now, Shiro is thrust into the dangerous world of Phantasm Things and taken to the Artifact Hero Academy, where wielders of ancient powers train to protect humanity.

A forgotten power. A broken soul. And a destiny beyond imagination.