8 is about fighting Kaiju – or to be more accurate, dai Kaiju, since "dai" means "big" or "giant" in Japanese.
Kaiju No 8 key graphic courtesy of Crunchyroll
"In a world plagued by threatening creatures known as Kaiju, Kafka Hibino aspired to enlist in the Japan Defense Force to defeat them."Let's wipe out the Kaiju together."[...]
Dai Kaiju Archives
Adi Tantimedh writes:
For the fans and pop culture watchers who like to watch these things, the new Godzilla movie is eagerly-awaited, and the studios are taking advantage of this interest by releasing the older movies on remastered Blu-Ray, including the darker, more series movies from the 1990's.
There is, however, another Dai Kaiju series that deserves[...]