A Gomora from the Start, and I’m Supposed to Fight Gatanothor

[Monsters Fight, No Ultraman Transformations] + [A World Without Ultraman] + [Nothing but Boss-Level Monsters] Jiang Wang transmigrates into a world with monsters but no Ultraman. From the start, he runs into monsters fighting, and his house is blocked off, leaving him no way out. With no other choice, he awakens the System and becomes a Reionics. He sends his Gomora into battle. But after the fight, as he passes another monster, he realizes that something about this world seems wrong. Very wrong! [Ding! The System has detected a powerful dark energy fluctuation. Based on its magnitude, it appears to be Gatanothor. Host, defeat Gatanothor as soon as possible to earn the right to raise it.] He points at himself. “Me? Fight Gatanothor?” “Will you win?” “I'm dead for sure!”