A young man, Keyaru, hears a voice inside his head directing him to a Star Spirit, who grants him the Halcyon Eye power to see all creation. In a previous life, Keyaru was a healing magician, but his power forced him to endure the painful memories of those he healed. He was captured, abused, and forced to heal his captors in battle. In secret, he grew stronger absorbing the experiences of his abusers and learned to use healing magic in unconventional ways. Eventually, he escaped, defeated a Demon Lord, and used her Philosopher's Stone to travel back in time four years in the past...