Invincible! This person has lived for a billion years - Chapter 845 William is seriously injured?!

A continuation from where High School DxD Volume 25 left off.

Hell's Awakening: The Guardian's RiseIn the fiery depths of Hell, where infernals, demons, and ancient creatures reign, the balance is fragile. At the heart of this underworld stands Azrael, the Guardian of Hell, a powerful being tasked with keeping the infernal realms from chaos and preventing the resurrection of fallen demons. With mastery over fire magic and the strength to command Hell itself, Azrael's existence is defined by vigilance and control.But when a powerful force of rogue infernals escapes their prison, led by a ruthless and vengeful faction, Hell’s foundation begins to crack. As these infernals break free, their goal is clear—to unleash an uprising and bring back the dead. Azrael must face not only these deadly foes but also confront his own inner demons. As the situation escalates, Azrael discovers his own potential for evolution—powers he never knew he possessed that could either save Hell or destroy it entirely.Amid this turmoil, the arrival of deities, including gods of light and purity, threatens to further destabilize Hell’s delicate ecosystem. They believe Hell must be purified, even if it means eradicating the guardian himself. As battles rage, alliances shift, and Azrael’s strength grows, he must decide whether he will uphold the order or reshape Hell in his own image.In this battle of gods, demons, and guardians, Azrael’s evolution is just beginning. The question is not just whether Hell will survive—but if Azrael will become its ultimate ruler—or its ultimate downfall.

We follow Anthony, a man forced to adapt to a world of dark fantasy that imposes itself on him with an unmistakable brutality. A place where shadow and violence reign supreme, where inequality is riven and the laws of nature are distorted. A world where every moment could be the last.What fate does this cruel universe hold for our protagonist? What hidden secrets do the powerful hide behind cold and inaccessible masks? And what alliances, betrayals or rivalries will be woven into this maelstrom of supernatural forces and unfathomable powers?To survive, Anthony will have to fight, evolve and face his own demons. For in this place, no matter the greatness of the beings that populate it, it is tenacity that dictates the law.