Yumekui Merry

Japanese Title: 夢喰いメリー

English Title: Dream Eater Merry

Korean Title: 꿈을 먹는 메리

Plot
Yumeji Fujiwara is a young male student like any other who, after an event that occurred 10 years previously, gained the power to see the aura of other people's dreams, and the ability to predict what kind of dream they will have next. Since then, he has started to have strange dreams of cats following him for an unknown reason. The boss of the cat army, John Doe, tells him that his body is needed to access the real world. One day, as he was returning home from his errands, a mysterious girl falls on top of him. This girl, named Merry Nightmare, is actually a dream demon (夢魔 muma), who's searching for a way to get back to her world. Yumeji decides to help her, and a gate to the world of dreams opens again, this time in full daylight. She appears in the daydream worlds looking for an answer to how to get back to her world. Meanwhile, an evil dream demon named Pharos Hercules is leading other dream demons to make humans into their vessels in order to raise an army, killing those that oppose him which causes humans to lose sight of their goals and ambitions. Yumeji eventually becomes Merry's partner, using his ability to scout out dream demons so Merry can hunt them.

After Hercules' downfall, Merry's quest in returning to the dream world continues. In the meantime, a mysterious boy named Kyou Shiragi transfers to Yumeji's class, where dream demons are suddenly manifesting; as a result of their losses, instead of destroying they cause humans to accomplish their goals. With dream demons only seen by previous vessels, Yumeji and Merry now have to investigate this unusual phenomenon.