Bloodivores

- Both Main character were framed for a crime they didnt comite - Both main character have a female friend with them , that goes to "prison" too - Both main character have special powers ( Deadman and Bloodrivers) - In both series there are Bloodrivers and Human , like there are Deadmans and Humans 

-both of these are action and dark anime -china as a main element -characters have chinese names -main character seeks for their relative  

Criminals on death row, get a chance to erase the sentence by going to this island where they have to survive. The criminals have to work together to get away from the island. Love between some of the main charachters. 

Ibara no Ou and Bloodivores are about a ragtag group of characters that are locked away and wake up some time later to find out their world has heavily changed. Both anime has monsters that hunt everyone down by the masses and the audience must figure out what happened. 

- Both male leads have a female companion/possible love interest - Both shows have vampire characters - Both male leads have human and vampire sides - Humans and vampires co-exist in both series - Both male leads have relations to peace - Both male leads have been framed by someone/people - In both shows, vampires are looked down upon as if they are the lowest of the low. 

both have two different kind of people that co-exist "non-humans" in both shows are discriminated by "humans" "non-humans" in both shows get their source to live by eating the "humans" (except in BV, they drink blood) both MC look the same(its pointless but i just want to point it out lol) both non-humans use "masks" to hide their faces though its more unique in tokyo ghoul(no offense :P)  

the anime just started and i noticed they have some similarities so far... both of these anime have the same feel to it. vampires are discriminated against by humans. vampires and humans are at war with each other.