The story focuses on high school girl Nagisa Yukiai who lives in a seaside town. She has believed her grandmother's story that spirits dwell in words and they are called kotodama (word spirit). One day, she strays into a mini FM station that has not been used for years. As an impulse of the moment, she tries to talk like a DJ using the facility. But her voice accidentally broadcasted reaches someone she has never expected. (Source: Crunchyroll)

Several days after the mortal battle against Link Joker which embroils the whole world, the world has returned to peace. But Kai Toshiki faces a surprising situation. Sendou Aichi, the hero who saved the world from the invasion of Link Joker, has suddenly disappeared. In addition, everyone's memory about Aichi is lost...Almost all hints have been lost, and Kai starts to search Aichi with Blaster Blade and the deck of Royal Paladin, the only existing hint and the proof of their bonds. Kai is approached by fighters who call themselves Quatre Knights. The four---Gaillard, Neve, Ratie and Sarah---are fighters with world-class power in vanguard fights. They control mysterious power and urge Kai to give up searching Aichi. What is their purpose...!? And what is their relationship with Aichi...!? Kai, with the new power Legion in his hand, fights to take Aichi back. Now, the war has begun! (Source: Cardfight!! Vanguard Wikia)

Shaped by experiences that left him weary of human relationships, Rei Hitoma openly dislikes people. Seeking a quiet, uneventful life, he accepts a teaching position at a secluded school in the mountains, only to discover that his classroom is anything but ordinary. The students under his care are demi-humans who have gathered there with a singular goal: to learn what it means to become human. Despite his disillusionment, Rei finds himself responsible for explaining human behavior and social norms to mermaids, bunnies, werewolves, and the like. As his students earnestly struggle to understand humanity, their questions and aspirations gradually expose the contradictions in Rei's own beliefs.

It is the year 2100, and on the colonized Moon, a project is under way to explore new aspects of energy. Amami Kurau is the daughter of the chief scientist on the project, and on her 12th birthday, she accompanies her father to the lab to observe the experiments. Then something goes awry, and Kurau is struck by twin bolts of light. In the aftermath, her father is dismayed to find that his daughter is no longer his daughter. Rather, her body is now home to two energy entities with fantastic powers. (Source: ANN)