(Owen Patrick is seen arriving at Shin Union-Verse, where he sees the I.S. Pilots setting towards the Serizawa Mansion.)

Owen: I need to stop them!

(Owen then goes to the entrance of the mansion and stands in front of the I.S. Pilots.)

Ichika: Huh? Who are you?

Owen: Uh... friends with Serizawa.

Houki: (glares) Then you're not our friend. Now move!

Owen: (smirks) I don't think so!

(He pulls out his Geartlinger, inserts his Sentai Gear on it and spins the lever.)

Owen: Change Zenkai!

YON-JUU-GO BANG!

BANGBANG! BANGBANG!

(He then pulls the trigger, transforming.)

BA-BANG! BA-BANG! BA-BANG! BA-BANG! BABABABANG! ZENKAIZER!

(He becomes Zankaiser as he introduces himself.)

Zenkaiser: Secret Power! (poses) Zenkaiser!

(Zenkaiser prepares to fight the I.S. Pilots who get in their battle stances as well as the screen fades to black.)

(A/N: KaijuMaster20, Owen Patrick/Zenkaiser is going to help the Serizawa Family against the Union Academy for a while.)

(Meanwhile back to Saber's universe, everything is back to normal as the world court setenced Vandal Savage to live a life in prison without a chance to parole along with Lex Luthor, who also lost the ownership over LexCorp.)

Nathaniel: Everything is going wonderful, huh?

Tadano: I'm still worried about Najimi and Makoto though. Where did they go?

(Suddenly some sparkles cover Nathaniel, Tadano and Naoto.)

Naoto: What's this?

(Suddenly they are transported to another world where they see both kaijus and Kamen Riders fighting each other.)

Nathaniel: This is horrible...

Tadano: Who could ever have done it all.

Naoto: (sees a figure) Uh... guys?

(They then turn to see a familiar figure standing in the top of a mountain, and their eyes widen as they realize who he is.)

(They turn to each other and nod in agreement as they pull out their books as the screen fades to black.)

BRAVE DRAGON!

LION SENKI!

LAMP DO ALANGINA!

THE TRIO OF DEEP SIN WILL RETURN IN KAMEN RIDER DECADE: ABSOLUTE SHOWDOWN!

A/N: AlstonChanAlstonChan, Nathaniel Lane-Kent/Kamen Rider Saber, Tadano Hitohito/Kamen Rider Blades and Naoto Haichiouji/Kamen Rider Espada will try to fight Kamen Rider Absolute Decade