Third person POV
[1 week later…]
Reina was now finished making something in the lab. Gen was busy researching for the cure in a separate lab. Reina had made a serum and replicated it with his Template Serum, which can replicate any liquid serum. He made the serum, which he had called Almost to the Brink of Death. True to its name, that serum didn't allow him to die in any way. The recipe and formula for it are kept as a secret by him. So after that, Reina wanted to test it out by injecting it into himself and find a deadly situation to die in to test its effectiveness and efficacy. These were driven by his desire to cleanse himself psychologically of his sins. Gen doesn't know what he was doing now, and Reina went out to find a deadly situation to die in to test the serum's effectiveness, going with a squad led by Nato.