Same animation studio. Same basic concept - after humanity has degraded, one species has pretty much overcome the human race - Titans in AoT, Vampires in OnS. A young guy (Eren, Yuuichirou) vows to kill all of the members of the threatening species (Titans, Vampires) in a quest for revenge for dead loved ones.
JaserHyakuya asksCan the demon in Murasame muster enough strength to kill a vampire without being a cursed gear? Mika is obviously faster and stronger than akame, and he contains the seraph gene. He is also a vampire. Akame has a venomous sword and Little Warhorn.