Raven Black Assassin

After a rather odd interaction with Rin, Yukio goes missing two years later Rin and his class now under instruction of Shura are sent on a mission to capture a raven demon acting as an assassin that could either be their enemy or their family. Rin/Yukio over dramatic summary from shitty word choices made in double geography anime based cos if I see nii-san again I'll shoot myself.