This feels less and less like a story with a plot and more like incoherent ramblings about things happening. Like a kid who just keeps adding onto a story to make it sound more exciting but ends up just confusing everyone.
"You see! Nagi died in our world and became the Great Spirit of Water in another world! So he's going to help people out! Like, he saves a dragon who was cursed and some slaves and makes a village! And then he makes a contract with one of the slaves! Oh, and there's some other reincarnators too! One's a sage and the other's a dragon! Ummmm, oh yeah that first Dragon was killed so Nagi is raising that dragon's kid! And there's demons who are brainwashing humans into killing dragons! And there's other great spirits! And now his contractor is a hero who will slay the demon king, did i mention there's a demon king? And the demon king's followers resurrected a Cerberus! That's all I've got so far, what do you think?"
"Uhhh, is there anything to connect those events?"
"Yeah! They happen basically back to back, so of course they're connected."
Edit:
author be like: