(Inspired by the Twisted Childhood Universe, I have decided to create something similar to it but with Anime franchises)

RWBY: Blood & Roses;
World famous professor, Ozma, & his secretary Glynda Goodwitch, after suffering a terrible car crash in Montana found themselves in the Emerald Forest, where they are soon hunted down by two serial killers, Ruby Rose & Weiss Schnee.

DXD: The Reckoning;
Junior Priest, Asia, enters the abandoned city of Kuoh to purify it from whatever evil haunts it. Little does she know, psychopathic demons, led by a she-demon called Rias, inhabit the site & will kill anyone who enters their territory.

RWBY: Blood & Roses 2;
After the events now known as the Emerald Forest Bloodbath, Ruby & her friends, now including the silent & deadly Werecat Blake and the berserk & violently aggressive Yang, takes the fight to Ozma's hometown in Beacale.

Mutant Monsters Academia:
In Japan, murders are occurring on a daily basis. Chief detective, Aizawa Shouta, investigates the crime scenes to discover a terrifying truth: Mutated Monsters are living in Japan. Now, Aizawa must find and stop these monsters from leaving Japan or else all will be lost.

Woven Kills:
A science experiment gone horribly wrong as children of the scientists were killed. But the children never stayed dead, as they return as horrible abominations of flesh & cloth.

RWBY: Blood & Roses 3;
The girls, now accompanied by fellow killers Jaune Arc, Nora. Valkyrie, Pyrrha Nikos & Lie Ren, take their bloodlust to San Francisco to get their revenge on Ozma, who now has a family with a gorgeous Pet store owner by the name of Salem.

The Monsters from the Middle Ages:
Long ago, a clan of bloodthirsty monstrous like murderers called by many names such as Night Raid, the Weapon Raiders, the Fairy Tail Killers & many more existed & brought terrible bloodshed until they were magically imprisoned within an enormous crystal. But when a greedy millionaire unearths the crystal & it accidentally cracks, the Magic Weapons Raiders returned to shed blood to all in the 21st century.

Ronins Attack:
In a remote part of China, a large village, led by a vile man named Dogen, are attacked daily by Ronins from various villages he attacked, raided & conquered. Though he fought hard against them, they killed him & destroy his village and everyone in it. But that didn't satisfy their bloodlust & rage, so they continue their path of bloodshed through different parts of China.

Mutant Monsters Academia 2: Ultra Carnage
5 years later, Aizawa, now promoted, took a couple apprentices under his wing. But this happy moment was ruined by murder cases. Aizawa knew this all too well: the mutant children are back. And they're not alone.

DXD: The Reckoning 2; Devils Unite;
Asia, now a master Priest, returns to Kuoh. She learns Rias & her group didn't die. They returned, and are now accompanied by two other Devil groups: the Sitris & the Phenexs.

DXD: The Reckoning 3; Supernatural War;
Humanity faces a grave threat: the Devils, Angels & Yo-Kais joined forces to take over Kuoh. Asia, hardened at this & now a Supernatural Hunter, fights to protect the town, alongside her three new apprentices.

RWBY: Blood & Roses 4;
After their latest failures, Ruby & her allies sought out other serial killers to help them kill Ozma and his family.

Twisted Union: Monsters Assemble;
When all of their enemies join forces to rid the world of them once & for all, Ruby, Izuku, Rias & many others decide to unite against them. This shall be the battle for the ages.

(Here's the first thing I decide to post here. This very piece of work also serves as my final send off from making stuff on DeviantART. It was fun while it lasted, but I've decided to retire from it for good. Hope this gets a good enough response or view. Plus, if you wish to, you could make stories about some of these or something, just make sure to credit me beforehand.)

(Update: added a couple new films (DXD: The Reckoning 2 & 3, Mutant Monster Academia 2 & RWBY: Blood and Roses 4.)