Yumekui Merry begins with Yumeji Fujiwara, a seemingly average high school student. But ten years ago, Yumeji gained the ability to see the dream auras of other people around him. This ability allows Yumeji to predict what type of dreams people are likely to have next. The dreams of others may not be a mystery to Yumeji, but his own dreams have recently left him puzzled. In dream after dream, Yumeji has been pursued by an army of cats lead by John Doe, who claims he needs Yumeji's body to enter the real world. These strange occurrences get stranger when Yumeji meets Nightmare Merry, a dream demon seeking to return to her own world. Using his powers, Yumeji decides to assist Merry in getting back home. But Merry's very presence in the real world means that the barrier separating dreams and reality has been broken, and not all of the dream demons intend to come to Earth peacefully…

In the past, humanoid bears coexisted with humans. However, a meteor shower that fell onto Earth had a strange effect on bears throughout the world: they suddenly became violent and hungry for human flesh, spurring an endless cycle of bloodshed in which bear ate man and man shot bear, forgetting the lively relationship they once had. The "Wall of Severance" was thus built, separating the two civilizations and keeping peace. Kureha Tsubaki and Sumika Izumino are two lovers attending Arashigaoka Academy, who, upon the arrival of two bears that have sneaked through the Wall of Severance and infiltrated the academy, find their relationship under a grave threat. The hungering yet affectionate bears, Ginko Yurishiro and Lulu Yurigasaki, seem to see the bear-hating Kureha as more than just another meal, and in getting closer to her, trigger an unraveling of secrets that Kureha may not be able to bear. When their relationships provoke the Invisible Storm, a group that keeps order within the ideological school, the girls must stand on trial with their love, embarking on a journey of self-discovery en route to attaining true love's "promised kiss."

A young boy named Satoshi embarks on a journey to become a "Pokemon Master" with his first Pokemon, Pikachu. Joining him on his travels are Takeshi, a girl-obsessed Rock Pokemon Trainer, and Kasumi, a tomboyish Water Pokemon Trainer who may have a crush on him. Satoshi and Co. end up traveling through various regions, including Kanto, the Orange Islands, and Johto, and then enter the Pokemon League competitions there. Along the way, they run into many confrontations with Musashi, Kojirou, and Nyarth, a trio of Pokemon thieves who are apart of an evil organization called "Team Rocket." But every time Team Rocket tries to do their evil deeds, they fail thanks to Satoshi and his Pokemon.

What does it mean to be a hero? Yuuki Yuuna thinks she knows. As part of the Hero Club in her middle school, Yuuki always does her best, wants to help others, and strives to bring smiles to people's faces, no matter who they are. But Yuuki is about to become a much bigger hero. Mysterious and powerful forces are approaching and threatening to destroy the world Yuuki knows and loves, and it's up to Yuuki and the Hero Club to stop them. Together with her companions, Yuuki uses a special phone app to transform into a magical girl and battle against strange beings called vertices. In between studying and putting on shows for kids, Yuuki has to fight for the very existence of her world. Can five middle school girls really stop the vertices from entering their home world and destroying it?