Survival in the Apocalypse: Summon the Dragon-Subduing Arhat at the Beginning

This is a world whose historical pattern is 70-80% similar to that of Earth. The only difference is that the monsters on Earth only exist in legends, while the monsters on Blue Star are real. This is not the worst thing. The worst thing is that only demons and monsters are real, but none of the gods and Buddhas are real! Not to mention the gods and Buddhas, there is not even a cultivation system! Xiao Yao, an unlucky kid who was given the mission to die just after traveling through time. In a desperate situation, the desperate rescue system arrives late but summons the Dragon-Subduing Arhat at the beginning. But the question is... Why does this Dragon-Subduing Arhat seem not to be serious? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.