
If you're looking for anime similar to Seikima II Humane Society: Jinrui Ai ni Michita Shakai, you might like these titles.
A story about two young demons who are always slacking off at work, a place that happens to be an organization that vows to keep the balance between the worlds of the living and dead by killing humans!
Nube fights a demon who resides inside walls, confronts a young spirit who wants her harmonica back, and in the end he must battle a powerful demon named Zekki, a demon that resides within Nueno.
Forgiven of her crime of looking into the past life of the one she loved, Yama Rikudou is a powerful being from the underworld sent to the human realm to hunt demons. She must eliminate the overflowing evil here in order to provide some balance to this world.
Demons and monsters roam the halls of Domori Elementary, causing mayhem, mischief, and trouble for the students. To their rescue comes Nueno Meisuke, also known as Hell Teacher Nube! When he was a child he sealed a demon in his left hand, giving him the extraordinary powers to defeat evil where it lies. Armed with his spirit-slaying abilities, Nube will protect his precious students at all costs! But more importantly, can he ever manage to get a date with the lovely Ritsuko-sensei?
After Hiyuu and the gang defeated the monsters known as Oni, Shinjuku was safe once more – or at least, it should have been! Soon, the news is filled with reports of several unexplained murders; and what’s worse is that our heroes find themselves attacked by a dark and murderous organization known as “Dancing Swords!” Only those with special powers are being targeted by this shadowy group; can Kyoichi, Hiyuu, Misato and friends be able to survive?