Master Raindrop Season 1 Episode 18 Sincerity

When Bu makes the Elements powerless, they form an alliance with a boy, Momotaro (Peach Boy), who says he can help them regain their powers at a magic statue. The place where the healing statue is supposed to be, is the hideout of the Oni. But when Peach Boy steals the Oni's treasure and escapes, they know - he was lying all along.