For many years the Gods of Evil and Dragon Gods fought many battles - until the day that those with the blood of the Dragon Gods sealed away the power of the Gods of Evil. In the present, Ryu is a dragon ninja who, one night, is attacked by a group of assassins. He finds an I.D. card on one of the assassins which belongs to the Friedman Company, which is owned by Dr. Ned Friedman, a man claiming to have cured cancer. On top of that, upon walking by a house Ryu hears a young girl asking for help. What do these mysterious events mean, and does it have anything to do with the power of the Gods of Evil?
Ikurou is a young man with problems: after a terrible car accident, he was captured by a seedy organization and implanted with a parasite known as Baoh -- a creature which bestows superhuman powers on its host, especially when mortally wounded. While being transported by train, he is accidentally set free by Sumire, young a psychic girl, and the two make their escape. With more of his humanity slipping away by the minute, and the organization hot on their tracks, will the two escape with their lives, or simply cause a bloodbath along the way?
Both Baoh and Ninja Gaiden are anime that boast a heavy arsenal of monsters, mutants and gallons upon gallons of blood and truck-loads of gore, but they are found lacking in everything else. Be it the story, the plot, the voice acting, the dialogues, everything is cheesy enough to make even the most low-budget of B-movies blush.
Some might consider these two anime to be so good that they are bad, but I personally found them both ridiculous with Ninja Gaiden being the lesser evil. If you like either one of them, you'll just love the other.
Hikage and Marou were childhood friends, and fellow ninjas -- that is, until Marou betrayed Hikage, and vanished into the night. Now, in the midst of his quest to find Marou, Hikage must defeat many yoma (monsters) and stop the Kikuga no Miko, the source of all evil monsters' power, from being revived. But is he willing to risk his life for friendship?
Both anime have several simularities. They both have action, ninja, and supernatural beings/monsters. They also both have a simular artstyle. If you like one then you might like the other.