Kannazuki Satoshi, a 19-year-old student, quickly grows bored of everything—except for the rare things that truly capture his interest. A detached observer of the world, he has always felt like he exists without purpose, unable to find meaning in life… until his own abruptly comes to an end.
A terrorist attack. A speeding car. An explosion. His consciousness drifts away from his body, slipping beyond reality… until he is pulled into the unknown.
When he opens his eyes again, he finds himself trapped in a primitive world, wandering for 4 million years as an immortal soul. He watches civilizations rise and fall, witnessing the passage of time from a perspective no human ever could. With every moment, he accumulates an unfathomable wealth of knowledge.
At last, his ghostly existence is interrupted when he is summoned by Rina Vibe Doscheni, a struggling mage, during a duel at the Magic Academy of the Falasia Kingdom.
Rina is ambitious but powerless. However, with 4 million years of knowledge at his disposal, Satoshi decides to guide her on the path to supremacy.
Can he turn a talentless mage into the ultimate master of magic?
And more importantly… what hidden truths about this world remain to be uncovered?