The film "Kuroitsu of the Monster Development Department" is adapted from the manga of the same name created by Mizusaki Hiroaki. In the secret organization Acastia deep underground, a group of development staff worked hard to develop various evil monsters, but they were always defeated by righteous heroes.
Kuroizu Touka is Acastia’s research assistant, she Fight day and night with Dr. Sada Maki, trying to overcome various obstacles, hoping to develop a monster that can defeat the hero. However, they face countless challenges in their work. They need to fight for development budgets, manage deadlines, and obtain approval from supervisors. It can be said that they strive to survive in adversity.
During this arduous task, Kuroizu and his team must always Face the threat of the nameless and undefeated shapeshifting hero Sword God Preta. This hero is the strongest enemy of Kuroizu and others. He always stands in front of them, making their research and development plans extremely difficult.
Kuroizu Touka and the team will not back down easily, they have With firm belief and determination. Under the leadership of Kuroijin, they support each other and face every difficulty and challenge together. Even if they encounter failures, they will not give up, but continue to sum up experience, strive to improve, and strive to successfully develop monsters that can defeat heroes.