Touma Kamiyama (Crossover War Heroes)

Touma Kamiyama is one of supporting heroes in Crossover War Heroes series.

Personality
As a novelist and bookstore owner, Touma has a deep and immense love for books, believing they bring happiness and joy to others. He's easygoing, but has a passionate side and values "promises" above all else.

He has a catchphrase in which he says during battle I will decide the story's ending! (物語の結末は俺が決める! Monogatari no ketsumatsu wa ore ga kimeru!).

Biography
Touma was first mentioned by Lady Yuinshiel Asteria that he is indeed the co-creator of the Duel Monsters, who had always worked with his father, Haruto Souma.

Touma Kamiyama made a debut in the storyline as the elder brother of Hazuki Kagimura. He is destined to notify Symphogear heroines and their friends that Gunther Prozen himself was unleashing his reign of terror to kill many species, like Pokemon, Digimon, and others. However, he was approached by Dr. Dan and Knight Unryuji to have a meeting about the future deaths of Rustal Elion and the Seven Stars just before going stright to Prozen in the final battle.

After the deaths of Kudelia Aina Bernstein, Kenzo Tenma, and Atra Mixta, he, Hazuki, and the heroes arrive to stop Tekkadan; but he and the heroes were confronted by Prozen's evil mechas.

Powers and Abilities
TCG Manipulation - Touma can create, shape and manipulate Trading Card Game (TCG) cards, intuitively drawing the right card for the needed situation, and controlling the TCG-cards and beings/tools that can be summoned using them. They can use the cards to achieve real-world effects in accordance with the capabilities depicted on each card. Users can design their own custom-made TCG decks and utilize those cards accordingly.

Story Manipulation - Touma can manipulate stories and its characters and how they act, what they can do, etc., the locations and what they look like, and the events of the story as well as how it starts and ends.

Trivia

 * Outside the Kamen Rider franchise, Professor Kamiyama who studies the relationships between humans and countless species (Pokemon, Digimon, Duel Monsters, etc.).