What is the meaning of the chainsaw man?

Chainsaw Man, yay, is a reverse meme. This yay, yay meme comes from the catchphrase of the protagonist of the comic Chainsaw Man, because he always says yay, and this meme comes from the comic. In Chapter 53, in the manga, the protagonist initially thought that the protagonist had been dumped by Lesse, and was very sad.

Said "My heart was taken away by Lesai, and there may be no more joys and sorrows in this life." Then when his boss asked for a trip, he immediately jumped up excitedly and said, "Okay." ", because the contrast is relatively large, so the joke came out like this. It often appears in comics. It is the mantra of the male protagonist Denji. It often appears when being invited by Magima, making plans, or encountering happy things. The male protagonist Denji's expression, coupled with "Okay", became a meme.