BioToxic project:

The tori Nasuke was going to die because of a toxic infection. The origin of this infection is still unknown.
Seeking for help Nasuke went to doctor Nightmare. Doctor Nightmare constructed a helmet that could contain the infection.
While testing the helmet doctor Nightmare discovered that the infection secreted a bright green substance that emits energy.
Seeing that doctor Nightmare modified the helmet so that it would harvest that energy and and use it to increase Nasuke's physical power.
Later it was discovered that the infection was starting to spread in the entire body of Nasuke and would eventually kill him.
Both of them being scientists they developed together an exoskeleton that would harvest all the energy from the secreted substance leaving it incapable of destroying Nasuke's body and increasing his physical abilities tenfold.