Can You Clear Another World Without Using the System?

"The gods are long dead and the church is full of monsters." Ain, a young man spurned by the world - after being reincarnated into a different world, in order to survive on his own will, he constantly bypassed the system's instructions and honed his strength alone to prepare for the "day of betrayal by the gods." In order to survive the powerful power of the Demon King, Ain invented the conspiracy behind the "Church of Solaris", but the Demon King who solved the curse turned into a beautiful girl who followed him? No, she even established a huge organization to unite the girls who were defeated by Ain. Do they want to take revenge on themselves? Ain said nothing and just kept getting stronger.