Astral Pet Store (WN) - Chapter 1568: 1568 War of All People

He became a teacher at the best magic academy in the empire.
….For being mistaken for someone else.

Seventeen-year-old Dominic Hayes had always been a quiet dreamer—chained to hospital beds, IV drips, and the ticking clock of his diagnosis. Leukemia stole his strength, his youth, and finally, his life. But fate had one more surprise waiting for him beyond the veil.When Dominic awakens, it’s not to the afterlife he expected—but to the crashing waves and boundless power of the ocean itself. He has been reborn as Poseidon, the Greek God of the Sea. With divine power surging through his veins and immortality in his grasp, Dominic is no longer the dying boy in the hospital—he is a god.But power comes with purpose.As he grapples with his new identity, ancient forces stir. Old gods rise, long-buried secrets awaken, and the balance between realms begins to crack. Dominic must decide—will he embrace his divine fate and protect the world he once had to leave behind, or will he drown in the very depths of power he never asked for?In this epic journey of rebirth, grief, and second chances, Reincarnated as Poseidon is a tale of what it means to live, to lose, and to rise again with the fury of the tides.side characters :Zeus, Hades and Athena

There are three realms in the multi verse; The Cosmic, the Mortal and the Nether realm.

Hal grew up in the mortal realm with no idea whatsoever of who his parents were.

His love for relics, adventure and the occasional danger would aid him in finding a genie's lamp.

Rubbing a genie's lamp should grant three wishes, but Hal is struck by lightening instead and eventually arrives in the Cosmic realm with a large book in his mind space titled; The Primordial Cosmic Grimiore, that apparently holds all knowledge for a perpetual reign.

And so Hal's journey begins in a little city called Salmon city, in the body of a 17 year old boy also named Hal but was sold into slavery by his own father.

Hal finds out who his mother (prior to reincarnation) whose bloodline now flows unmixed in his new body is....

Join Hal as he battles mortals, Dragons, phoenixes, Gods and many more together with his harem of Beauties for the complete subjugation of the three realms.

One day, a silver-haired goddess appeared before him.“Heaven-Defying Star. The one who goes against fate. The sole savior of a world doomed to end—”What the hell is this woman even talking about?“You must be the Regressor.”“… What?”No, I’m not.