Kryptonian Kaiju: SpaceGodzilla Male Reader x DCAU Harem

For years, Lex Luthor could never accomplish his singular goal, one he spent years attempting to overcome and eliminate, that goal being the demise of Superman. The repeated cycle of failure and humiliation at the hands of the Man of Steel pushed Luthor to push the boundaries of technology and science, which resulted in creations like Bizarro, the failed genetic clone of Superman. After that miserable blunder, Lex once more decided to test his hand at genetic tinkering, in order to create the perfect killing weapon that would end Superman's life once and for all! Thankfully at the same time, a Lexcorp funded team of Archaeologists stumbled across the skeletal remains of a gigantic, larger-than-life monster deep in the heart of China. Immediately hearing this news, Lex was able to procure one of the bones from this group and his vile mind whirled with ideas when he laid his eyes upon it. The demented genius ultimately decided to retool the failed Bizarro project and gave it the new name of "Project: Godkiller". He would mix together DNA from both Superman and this beast to create something godly, something that would rid the world of Superman for good. Several years later the project was complete, and a victi------I mean willing and brave human volunteer would need to be injected. Previous trials run with animals were met with nothing, but horrific failure as said animals immediately erupted into milky white crystals after mere minutes after exposure. Either by fate or luck, a high-school group was coming for a school trip, and all the Lexcorp scientists needed to do was inject one of those kids with a healthy dosage of the "Godkiller Serum". None of those lab coots knew that the monster, nay the Kaiju they were about unleash upon the planet. This...."SpaceGodzilla" could be the planet's grand saviour....or its greatest disaster.