Chapter 1: Escaped, now on the run.

Two Japanese fraternal twins, escape a hidden science facility and grow used to being on the run. Their life changes after three years, when they meet their true loves and have to save the world from an evil threat. An evil man, with a goal of be-ridding the human race by mutating them into something stronger, will soon break war out and cause destruction.

The villain himself is putting mankind at stake, so it's up to these twins to save the world from an evolutionary crisis.
Oc x Ilumi Oc x Hisoka