Diarmaid Irwin's Changes

So we work hard, keep learning and improving, so that we can have the greatest freedom for our body and mind, instead of being restricted by material conditions and living a mechanical and repetitive life every day.
However, this right that ordinary people are born with is a luxury for Diarmaid Irwin.
Ever since he was old enough to understand, he knew that his body not only belonged to him, but also housed an extremely powerful demonic spirit that was eyeing his body at any time.
When...