Sonny Boy S01 E09 This Salmon Chazuke Is Missing Its Salmon Nya

"Nothing matters in this world, but once in a while, cool things do happen."

In a vast frozen waste, twins Sou and Seiji have been fighting each other for millennia. Ms. Aki says that to change the world, they need the twins' "Reverse" power, and Nagara and Mizuho come to assist. Yamabiko questions Sakura, one of Mizuho's cats.