Studio Production I.G's Kaiju No. 8 is a science-fiction action series based on Naoya Matsumoto's Japanese manga series of the same name. Revolving around recurring popular culture themes like loyalty, friendship, identity, sacrifice, and redemption, the show follows a dejected and demotivated 32-year-old Kafka who regrets not following his dreams. He inhabits a world where Kaijus have invaded normal human life to the point that a Defense Force has to be set up especially to fight against them.