I Transmigrated into a Supernatural World, and You’re Telling Me This Is the Ultraman Universe?

[Multiple Heroines + Dark Ultraman Transformation + Losing His Humanity] After dying suddenly from the start, he transmigrates into the House of The Grudge and comes face-to-face with Kayako. But... why is the Super GUTS team passing by? Cheng Ran: “Wait, System, you said this was the Ultraman world? Then where the hell did Kayako come from?!” [Ahem, Host, don't get worked up. Even though this System doesn't know either, I will definitely make you the strongest exorcist!] “The strongest exorcist? What am I supposed to exorcise, a god? You don't know that the Ultraman world is even more dangerous than the world of ghosts and monsters? People die by the dozens all the time!” [All right, Host. Then this System will make it up to you with a Seed of Darkness. Do your best, young man!] And so, Cheng Ran somehow found himself working as a ghost hunter in the Ultraman world. Cheng Ran: “I'm known as the Ghost-Hunting Master, but I have a side job, too. My side job is exorcising anything that isn't human! Remember, anything!” Daigu: “Is that Cheng Ran? Why is he a giant, too? No, something's wrong with this giant. It doesn't seem to be a life-form of light?” Ida Seiryu: “You are not human, but you are not an evil spirit either. Wait, what are you doing? Why are you sticking a talisman on me?” Mayumi: “Dear Cheng Ran, you promised to take me to the haunted house last time. Why aren't you going?” Cheng Ran: “Come on, what's there to be afraid of in a haunted house? If you want, I can take you somewhere really fun~” Camearra: “Brother Cheng, I don't like Tiga anymore. Please don't hate me, okay? How about you fill me up with your dark power?”