Ultraman: Ruling the Super-Ancient World as Black Tiga From the Start

Thanks for the invite! I'm in the year thirty million BC, sweeping across the super-ancient world! The good news: I transmigrated as Dark Tiga, became the invincible Dark King, and ended the civil war among the super-ancient giants! The bad news: the entire super-ancient world was actually an experimental site for some dark boss, and all the humans and ancient giants were its pawns. What dark boss? You mean the giant sea snail? Chen Ming: “Watch me fuse the powers of light and darkness! Truth Tiga makes his grand entrance!” Gatanothor: “What the hell! I was just taking a nap! How did a Zeperion Ray come flying at me?”