My sick girlfriend can't be my wife Yuno

Kazuki Amano travels to a new world. He is a cartoonist and a top student. He even has his own "Gold Finger" fantasy space.
Everything seems to be developing towards the pinnacle of life.
However, from one game on, everything changed.
"What, Zeus and Murumlu, you are not creatures I created, you are real?"
"What, the game of death actually happened for real?"
"What, I, the girlfriend I made in the game is actually my wife Yuno, the queen of the sick world?"
Amano Kazuki was forced to the corner, and asked the pink-haired girl holding the ax in fear, "Yuno, can't we break up peacefully?"