夢喰いメリー

High school student Yumeji Fujiwara has always been different—he can see the colorful auras of other people's dreams and predict what they'll dream next, a strange ability tied to an event from his past. His life takes an unexpected turn when a mysterious girl named Merry Nightmare literally falls into his world. Merry, a dream demon searching for a way back to her realm, teams up with Yumeji as they confront the shadowy forces of the dream world that threaten both their realities. Together, they face bizarre dream demons, unravel secrets, and forge an unlikely bond. (Summary by Grok 2)