Godzilla16
Zenless Zone Zero x Godzilla Crossover
Godzilla own by Toho/Legendary
ZZZ Own by Hiyoyo
"In every city on Earth, darkness will descend, enemies will rise, and the fate of the world is in his hands...."
Kai-Sei is a mysterious radiation energy source roaming in this world are a mysterious new breed of humans empowered by the radiation, some capable of superhuman abilities and others physically transformed into kaiju themselves. Kai-Sei is a portmanteau of Kaiju and "Sei", the old Japanese word for "essence" from the old civilization. In other words, it's Kaiju Essence
Kaiju, one of the greatest terror's known to mankind history, but their is one monster that stands above all kaiju's and the strongest of them all his name was Godzilla, who is known as the king of the Monsters, who was mankind's greatest enemy. but however over a century all of them seemed to vanished out of history, like they don't exist anymore from the face of the earth. 100 years ago, an event called the Cataclysm occurred which caused kaiju around the world to bring an end to civilization as we know it. Humanity was reduced to nothing more then ants cowering in the shadows of titans.
Centuries has passed, the society has changed and soon the centuries of war have reduced the Earth to shambles, forcing what remains of humanity trying to survive in a broken post-apocalyptic city of New Eridu, where humanity survives by navigating dangerous dimensional anomalies called "Hollows" that spawn monstrous creatures called Ethereals as humanity continues its war against ethereal, but there was a boy who was born with unusually "Traits", in which had something much more powerful than that. he had the strength and unmitigated raw power one of the strongest monsters in history, his name was Jira Katashi or Raijin