Basilisk: The Ouka Ninja Scrolls

The battle for succession that continued for three generations of shogun in the Keichou era culminated in a gruesome battle of ninja arts between the Kouga and Iga clans. Amidst a rain of flower petals, a man and woman who had decided to live for love were separated once again, beautiful in their transience. However, it is said that by the hand of Hattori Hanzo's adopted son, Kyouhachirou, these two flower petals, whether temporarily or permanently, were given life again and left two mementos behind. These children, born with a destiny of their own, were called Kouga Hachirou and Iga Hibiki. The former had eyes like his father's, and the latter had eyes like her mother's. It is now the Kan'ei era, and the land is at peace. As ninjas begin to disappear into the shadows after being deemed unnecessary, The Kouga and Iga clans ask a favor of Hachirou and Hibiki in hopes of reinforcing their foundations. (Source: Crunchyroll)

Ninja Scroll

Jubei Kibagami has always been the master dealer of death, but in rescuing a ninja woman from a monster he sets loose a chain of events that puts death in his own veins and sends them on a nightmarish odyssey through a surreal and devil infested ancient Japan. How do demonic possessions, an annihilated village and a man Jubei thought safely buried in his past all connect? If Jubei can't piece the blood-soaked clues together, his only consolation will be that he won't live to regret it for very long! Prepare your mind and steel your gut for the insanely gore-packed orgy of violence that still stands alone and unchallenged as the ultimate anime action feature. (Source: Sentai Filmworks)

Basilisk

The heirs to the Kouga and Iga ninja clans, Gennosuke and Oboro, hoped the unsteady truce between their tribes would last—but fate denies the lovers, thrusting their people into war after centuries of peace. The terms are set on two scrolls. One bears a list of Kouga warriors. The other holds a list of those who fight for Iga. The names found on these scrolls can only be crossed out in blood. (Source: Crunchyroll)

Hellsing Ultimate

Hellsing, a secret organization of the British government, has long been battling supernatural threats to keep the people safe from creatures of the night. The current leader, Integra Wingates Hellsing controls her own personal army to eliminate the undead beings, but even her highly trained soldiers pale in comparison to her most trusted vampire exterminator, a man by the name of Alucard, who is actually a powerful vampire himself. Along with Integra's mysterious butler and Alucard's new vampire minion, Seras Victoria, The Hellsing Organization must face not only regular ghouls and vampires, but a rivaling secret organization from the Vatican, and Millennium, an enigmatic group of madmen spawned by a certain war over 50 years ago... A bloody battle between monsters is about to begin, the dead are dancing, and all hell is singing...

Ninja Scroll: The Series

In feudal Japan, the Edo period brought a time of delicate peace bought with blood. This is a chronicle of the life of Jubei Kibagami as he wanders the countryside as a ninja for hire. At this time, ninja clans are everywhere. One clan, known as the Hiruko Clan, doomed to live and die in darkness, protects a sacred treasure called the Dragon Stone. The Kimon Clan, however, bent on reviving the power of the Toyotomi, wants the Dragon Stone and the treasure it hides. Jubei Kibagami is the best man for the job of protecting both the Dragon Stone and the only one whom can use it - The Light Maiden! (Source: Discotek Media)