Haruki Aizawa spent his first life chasing justice in a world where ordinary people could never truly change anything. At seventeen, his attempt to stop a murderer ends with his own death.

Reborn in a world of magic as Rei Valtherion, Haruki finally has the power he always dreamed of. Growing up within the influential Valtherion family, he learns magic, builds a new life, and secretly intervenes against criminals in the poorer districts.

But when a mysterious organization begins targeting those around him, Rei's quiet life is shattered. What starts as a simple investigation soon becomes a struggle involving kidnappings, ancient magic, powerful enemies, and forces far beyond anything he has encountered before.

With his family, friends, and everything he has come to care about at stake, Rei must discover what he truly wanted all along, and how far he is willing to go to protect it.