Sadako v Kayako

It's not as low-effort as it could've been and there's a few creepy moments scattered throughout, but once you get to the climax you realize you've been waiting 80 minutes to see two nightgown-wearing Japanese ghostladies with long black hair twitchily walk up to each other in the dark and it dawns on you that maybe, just maybe, you need to set better priorities in life.

Not awful, but a wasted opportunity. The plot ties itself in knots to justify the title matchup, rather than just getting down to it. Has its moments of genuine creepiness, but very little of the dread that the originals delivered and almost none of the fun the title promises.

Japanese memes go hard

Most of the runtime consists of cutting between a pretty-good short Ring movie and a pretty-good short Grudge movie, then a new main character shows up about halfway through, who is basically everything Reigen Arataka claims to be, and he says "Clearly the way to dispel these curses is to make them fight each other." So, only about the last 10-15 minutes are actual Sadako-v-Kayako scenes, but those final minutes were an absolute joy. Would have been a 10/10 if the whole movie were so inventive.

Goofy fun. Both legends are rewritten and changed to suit the needs of the story so this is in no way canon but it is fun.

It was not that awful; the more that I can say is that the resolution was kind of boring, more precisely, the moments before.

Just a fun horror movie that actually does suspense pretty well. More of a ring movie than a grudge movie, as the grudge feels like an after thought subplot. But honestly in the end ends up just being a fun little watch that doesn't wear out its welcome. Also the "supernatural" character that every ringu movie must have by law, is funny and doesn't kill the plot like in mainline ringu films. So plus there

I was hoping this would be fun

Actually final idea is not bad. But it could be better...