Hell's Paradise Jigokuraku Vol 2

Even an invincible ninja may not be able to survive Hell's Paradise!
Gabimaru the Hollow is one of the most vicious ninja assassins ever to come out of the village of Iwagakure. He's ruthlessly efficient, but a betrayal results in him being handed a death sentence. There is only one hope: travel to a long-hidden island and recover an elixir that will make the shogun immortal and he will regain his freedom. Failure is not an option-on this island, Heaven and Hell are a hair's breadth away.
Gabimaru is a ninja on death row with one chance to see his wife again-by finding the elixir of immortality on a supernatural island and delivering it to the shogun. Standing in his way are his fellow convicts and the fearsome beasts that roam the island, devouring or killing anyone they encounter. As Gabimaru and his executioner explore the island, they come under attack from creatures that resemble gods but behave like devils. Is this the holy land or hell itself?