i’ll try to explain my best,,
so basically sooho dies and he has his soul right, he eats his soul to become a god. deleter said that it’s risky but the future is different for angels and gods (meaning that all of this already happened). so taker becomes a god by consuming sooho’s soul and tries to get his past self to save sooho. he is only able to communicate to sooho through dreams (if you remember throughout the series sooho always has weird bittersweet dreams with taker in it that he never understands). he (taker) is unable to communicate with his past self so he tries to use deleter and sooho’s dreams to communicate.
there is a few more things i could explain but they’re spoilers, just lmk if you want the explanation

ITS ALL MAKING SENSE NOW