If you liked the Blood-C anime, the Anime-Planet community thinks you'd like:
Alucard is a vampire who works for Hellsing – an organization responsible for hunting down and destroying other vampires. In these dark times, whoever is bitten by a vampire turns into a ghoul -- with the exception of Seras Victoria, Alucard’s newly created and appointed apprentice. Now, Seras must serve her master, Alucard and work for Integra Wingates Hellsing. Nefarious vampire activities are being reported throughout England, and it all traces back to the organization named “Millennium”. Will the Hellsing organization, under the command of Sir Integra Wingates Hellsing, be able to prevent a full scale war? Or will the world become a battlefield of destruction?
Ookami Kakushi is far superior in my opinion, but both of these titles have some similar stuff in common - a mystery about wtf is going on, people getting messed up in various ways due to unknown foes, and a definite mix of slow parts + horror moments.
After the death of his brother Keisei, Ouri vows to take on the task of becoming a Contracted Priest and fight alongside of the Shikabane Hime Makina. But Makina has doubts about Ouri and his skills as a Priest. Grieving the loss of her old Priest, Makina still clings to the memory of Keisei, which could very well lead to her destruction. Will she accept Ouri as her new Priest and allow him to fight at her side, or will Makina let revenge consume her as she hunts for the rogue Corpses that killed Keisei?
Both involve teenage girls, with impressive fighting abilities with weapons against monsters that they refer to as their enemy, though they are more or less exactly like them. Also, in both of these anime, there is a hint of developing feelings between the heroine and a character. If you like anime with girls that don't mind getting bloody, have a mature and slightly cold personality, and have an alter ego (Blood C), then I highly recommend this anime.
Ten years have passed since the demise of the bubble economy, a time that polarized the world into two groups of people: the rich and the poor. In the present day, Saiga Tatsumi (a former war photographer) has been hired to investigate a secret club for the rich named the Roppongi Club, but he soon discovers secrets much darker than he’d ever imagined. With the help of a exploited goddess named Kagura, Saiga now possesses the power to kill by simply taking a photograph; but can he stay alive long enough to save her from her captors?
Speed Grapher and Blood C are fun hack n slash type anime. Blood C is more school based and focuses on the innocence of the main female lead. On the other hand Speed Grapher follows a tough war vet that handles his business all over the city. Regardless of the setting both anime feature explicit content, a solid slowly unfolding plot, and ALL the violence. If you liked one I'm sure you'll love the other.
One day a light descends from the sky and splits into the ideal girls of Takeru and Ryou. That is where this gentle and vaguely romantic story about our ugly and beautiful world begins. Soon enough the story plummets into the secrets of global extinction and the meaning of life. Everything in this world that is beautiful has something ugly in it, and that ugliness is part of the secret of its beauty. Even for romance this is true...
This Ugly Yet Beautiful World and Blood C feature innocence, suspense, awesome monster fights, great plot twists, and the most awkward pace I've yet to find in other anime (some people might hate it, but most will find it appealing). Their respective endings are pretty fun and memorable in their own way. If you liked one I'm sure you'll love the other.