Killing The Mighty Leviathon!

In his previous world, Sebastian first heard of atomic breath being associated with the mighty fictional monster called the Godzilla.

As a lover of marine beasts, though Godzilla was not one, he was attracted by the bombastic prospects of such an OP ability and he followed it. Due to this, he was quite a fan of the mighty Godzilla.

This was why after the conquest, once he had access to and read in the pinnacle library of Aurora Hospital's anatomy department that Leviathons had this overpowered ability, he was stoked!

This increased his enthusiasm to make his ultimate vessel all the more.

The ability to generate from within oneself radiation, concentrate it into a laser-like high velocity using electromagnetic force and unleash it from the jaws in the form of a red radioactive beam excited Sebastian to no end.