Kaiju No.8 centers around Kafka Hibinos journey from an ordinary man to a kaiju-shifting hero where he follows his dream of becoming part of the Defense Force to fight against monsters. As he trains to become part of this team of heroes, Kafka must hide his true identity while also using his newfound ability for the greater good. However, the story could have taken a different turn that would have resulted in a completely different dynamic for Kafka.

https://screenrant.com/kaiju-no-8-different-story-changed-kafka/