Thriller is a genre of fiction with numerous, often overlapping, subgenres, including crime, horror, and detective fiction. Thrillers are characterized and defined by the moods they elicit, giving their audiences heightened feelings of suspense, excitement, surprise, anticipation and anxiety.

Horror films may incorporate incidents of physical violence and psychological terror; they may be studies of deformed, disturbed, psychotic, or evil characters; stories of terrifying monsters or malevolent animals; or mystery thrillers that use atmosphere to build suspense.

The scene above, Gojo comforted Yuji as he knew that he was terrifid seeing jogo raw power. Then after he defeated him he said this statement. In summary, Gojo saying that Jogo was weak was a ploy for Jogo to show his true power and that he said that Yuji and the others must be powerful enough to beat him.

Jogo is one of four cursed spirits born from humanity's collective, subconscious fears. His appearance and abilities imply he was born from their collective fear of volcanic eruptions.