Hikari to Kage Lyrics - Casshern Sins

Hikari to Kage Lyrics - Casshern Sins belongs to the anime Casshern Sins, take a look at the argument:

In the distant future, Earth lies in ruins, devoid of its once thriving human population, replaced solely by sentient robots. These mechanical beings, designed to strive for immortality, are now confronted with an unprecedented dilemma. Luna, the epitome of their indestructible existence, perishes, triggering a catastrophic event known as the Ruin. The robots now find themselves plagued by an irreversible deterioration, their once invincible bodies succumbing to rust with no feasible remedy in sight. Amidst this desolate landscape, only one glimmer of hope sustains these crumbling souls—a relentless rumor that consuming the enigmatic figure known as Casshern could bestow upon them the elusive gift of eternal life. Yet, Casshern himself remains in the dark, oblivious to his own origins, purpose, and identity. In a quest to unravel the mysteries surrounding his existence, he must confront the haunting plight of relentless pursuers—a swarm of robots craving survival at any cost, unwilling to face their inevitable demise. Unleashing death wherever he treads, Casshern must confront his own mortality in order to unearth the truth that lies concealed within this desolated world.

Now that you know the argument, take a look to another songs of Casshern Sins also called キャシャーン SINS