If you're looking for anime similar to The Soul Guardians, you might like these titles.
Subaru Sumeragi is a descendant of an ancient clan who wields immense powers of the yin-yang. Because of his supernatural abilities, he doubles as an investigator for paranormal crimes and situations in Tokyo. With his twin sister Hokuto and comrade Seishirou Sakarazuka at his side, Subaru soon becomes involved in two cases which may cost him his life!
Subaru Sumeragi is a very compassionate, gentle and kind sixteen-year-old who lives with his twin sister Hokuto - but Subaru isn't your average teenager. He's an Onmyouji (spiritual medium) and the 13th head of the Sumeragi clan! Aided by Hokuto and their friend, the kind but mysterious veterinarian Seishirou, it is Subaru's job to calm the spirits and ghosts that haunt the urban decay of Tokyo. But as the incidents escalate, will Subaru's kind heart be able to cope with the darkness that threatens to rip the world apart at the seams?
Morimiya Yorito is a normal student who has an abnormal obsession for the sky. One day, he meets a strange girl named Shihou Matsuri who shares his interest, but as fate may have it, she isn't a human; Matsuri is a Yaka -- a "woe of the night" -- who is immortal and cannot stand the sunlight. A strange man is chasing Matsuri, to use her powers, so Yorito decides to help her hide. What are the strange man's plans, and what secrets does Yorito's sister hide?
One morning, Suruga Kanbaru meets Ougi Oshino, who calls himself a nephew of Meme Oshino. He tells Suruga about a rumor of "the Lord Devil" that grants any wish. Suruga is worried that the identity of the Lord Devil is none other than herself because she made a wish on "the Monkey's Paw." The item was left behind by her mother, and turned Suruga into a Rainy Devil and made her try to kill Koyomi Araragi. In order to find out the identity of the Lord Devil, Suruga decides to meet the Lord Devil, but who she sees at the meeting spot is the most unexpected person - Rouka Numachi, Suruga's old archrival...
Bookstore employee Mikado always had a tendency to see creepy things. He had lived his life pretending he didn't see these things but then he has a fateful encounter with an exorcist named Hiyakawa. Mikado ends up being forced to help out with exorcism duties and has to deal with the embarrassing fact that exorcising these things with Hiyakawa somehow feels really good. While getting dragged into dealing with these cases every day, they run into a cold-blooded murder case. Enjoy a new kind of horror mystery created by total opposites.