The Kaiju No. 8 manga is mainly about a character's struggle and growth in a kaiju-infested world. It has elements of action, adventure, and mystery. The plot keeps you on the edge of your seat with unexpected twists and turns.
One popular kaiju novel is 'Godzilla: King of the Monsters'. It delves into the world of the iconic kaiju Godzilla, exploring its origin and the chaos it brings. Another is 'Neon Genesis Evangelion: The Shinji Ikari Raising Project', which features mecha battles against kaiju - like creatures. There's also 'Attack on Titan', where the Titans can be considered as a form of kaiju in a sense, with their colossal size and the destruction they cause.
The 'kaiju no 8 light novel' is about a world full of kaiju. The story likely follows characters as they deal with the threats these giant monsters pose.