[KamenRiderOOO]

Quote:

Originally Posted by Matrixbeast

NO. IT'S A BATTLE BETWEEN DEN-O AND DECADE.
Momotaros is just sword form.
Opening post confirms that all 5 imagin (Sieg included) are in on this fight. I wasn't implying that all 5 will be running around at the same time, but Den-O has full access to all of his forms.

Exactly, this is a battle between both Riders with all (that have been seen) powers in their arsenal.