* The Original Japanese "Ju-On" series: This started with a 1998 movie and had sequels, a TV series, and even a stage play. The franchise ended in 2009 with "Ju-On: The Final." However, "Ju-On: Origins" was released in 2014 and serves as a prequel to the series.
* The American "The Grudge" series: This started in 2004 with the first "The Grudge" film, which was inspired by the Japanese "Ju-On" series. It had sequels in 2006 and 2009. In 2020, a reboot was released, continuing the American franchise.
* The "Grudge" franchise today: The franchise continues to expand, with a new American sequel "The Grudge" (2020), and a new Japanese series "Ju-On: Origins" (2014).
So, in short, The Grudge continues to exist!
If you want to understand specific details, you need to specify which series or film you're asking about.