I like this but would love to see this turn into a long and bigger story where teen theo grows up stronger to a young adult with a time skip. BUT of course that would never happen.
@Snowave i think she will give him one more wish in the ending of the Web Novel and then he will say "i want to stay by your side forever" and then he will be immortal like her ahahahahahahah don bla--me if i am spoiling you the web novel by guessing what will happen