Ultraman Arc: My Imagination Has No Limits

[No System + feel-good story + outrageous schemes] Heren transmigrates into the world of Ultraman and becomes the grandson of Hayato Higashiyama. Looking at the "little cube" in his hand, Heren can only sigh deeply. Since this new Ultraman has just started airing, he doesn't even know all of its abilities. But that doesn't matter, because he knows Arc's power: imagination. As long as his imagination is strong enough, he can become the mysterious Fifth Ultraman.