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Kafka Hibino is a 32-year-old member of the Professional Kaiju Cleanup Corp. His job as a Monster Sweeper is to chop up and dispose of Kaiju killed by the Defense Force. Kafka was also childhood friends with Mina Ashiro. The two made a vow to join the Defense Force and protect Japan from Kaiju. However, Kafka failed the entrance exam and quit on his dreams of being a member of the Defense Force while Mina became the captain of the Defense Force’s 3rd Division. While reevaluating his situation after a hard day, Kafka encountered a Kaiju who claims to have been “looking for him” and merged with his body. The result is that Kafka can now transform into Kaiju No.8 and possesses superpowers!