No. 1 Sentai Gozyuger S01 E10 Go, Go, Go! Showa Has Arrived!

"We don't need five people for "Number One"!"

Showa No.1 have appeared and turn the whole town to Showa era. He in rampage and doesn't accept the year 2025, forcing Sumino and Kinjiro to join his No.1 Battle. In other side, Osai have returned, but why does he attacking Gozyugers?