Tokyo Mutant Gathering

Kotaro meets two brothers, Makoto and Yuki who has psychic powers which Yuki gets kidnap by Fly Mutant to bring the Phantom Mutants to life and begins a invasion of Tokyo. Kotaro tries to fight back and only to find the Phantom Monsters tuern themselves incorporeal to avoid his attacks! Will Kotaro find a way of how to end this madness, once and for all?