The Cake Ran Away?!

Synopsis

Rikiya's little brother Tetsuya is a huge Red Ganbar fan. Not knowing the hero's identity is his brother, Tetsuya constantly disappoints Rikiya by saying things like "Red Ganbar is way cooler than you, big bro." Tetsuya's birthday is approaching. He's a cake fanatic and counting down to his birthday cake, but Rikiya and the rest of the family play dumb — secretly planning to surprise him. Meanwhile, a demon beast Yaminorius cooked up uses its cake-controlling powers to swipe every cake in town — including the chocolate cake Rikiya quietly hid away.