Rainbow Friends vs. Forbidden Siren:

This is based on certain Youtube videos.

Green and Purple were playing with the portal when Red showed up. "How many times must I tell you…" The portal then sucks them in…

...

The three find themselves at Hanuda Village. "Where are we," asks Green.

"Some Japanese village," says Red.

"Hey, some cult just murdered a girl," says Purple.

A hostile police man then attacks, forcing the three to run away.

...

As the three cross a bridge, an ominous siren shakes the region.

...

As the three walk, they find Melissa. "Are you more of those monsters," asks Howard Wright.

"We just arrived," says Red, "now, can you tell me what the #$*% Is going on?"

"I don't know," says Howard, "I'm part of an American film crew and when we got here, crazy things started happening! You guys could help! Come with me!"

...

The group then finds Miyako, a girl who wishes to escape from Hanuda. "Come with us," says Howard, "you guys don't eat kids, right?" There's an awkward pause. "Well, I'll keep you safe!"

...

As the group continues, Amana comes. "I am going to bring the god Kaiko into the world!" She takes down Howard and the Rainbow Friends and takes Miyako and leaves.

...

The group arrives at the Shibito nest, but they're too late, Miyako has already been sacrificed. They then see Howard's friends, who are now Shibito and an insane Melissa, who shoots the group…

...

Now, they're back in time. "What," asks Purple.

"Let's go," says Howard as he drags Red, Green, and Purple away.

...

"I remember Miyako melded her blood with mine so I wouldn't become a shibito," says Howard.

"This still explains nothing," says Red.

"There's Miyako," says Purple.

"The village is caught in an unending time loop," says Miyako, "we must unleash the other power to stop it!" But Amana comes and kidnaps Miyako and leaves.

...

The group arrives and Amana sacrifices Miyako, summoning Kaiko. "Wait, Kaiko is incomplete," says Amana.

As Kaiko attacks, Howard finds a sword and uses it to defeat Kaiko.

...

"Well, that's all done," says Howard.

"And we can return to our world now," says Red, "goodbye!" Red, Green, and Purple leave.

The End