Back in the late '90s/early '00s Japanese horror was in full swing, and it's been a while since the genre delivered a good scare. Well, prepare for more sleepless nights because two of J-horror's most iconic evil entities will battle in the upcoming crossover The Ring vs. The Grudge. You can catch a glimpse of the pair in action in the first trailer, below.

Producers got the ball rolling on the movie after a fan-made trailer of the two villains Sadako and Kayako became a YouTube hit. The end result plays like the J-horror equivalent to the Nightmare on Elm Street/Friday The 13th crossover we had in 2000's Freddy vs. Jason. Except in this case, both baddies have the same haircut and move rather slowly.

As this is an international trailer without subtitles it's a bit tough to figure out the specifics of the plot. Based on previous films and cunning detective work, it looks like more meddlesome youngsters will meet grisly fates. What's still up in the air is where the 'vs' comes in; will they squabble over victims? Or meet down a dark well/on a dark staircase and claw each other's hair out? Either way, it still looks scary as hell.

The Ring vs. The Grudge currently has no U.S. or U.K. release date, but it's scheduled to open in Japan as Sadako vs. Kayako on June 18.

Images: Universal