REQUESTS OPEN! (DM, Wall or comment)

This was originally just a requested Imagine! Now it's a book! Summary; Mike leaves Y/N for El... but then everything flips and things become... Strange.

[COMPLETED] *set AFTER the events of season three!* an unexpected guest arrives in hawkins, making mike wheeler reconsider his entire life. he starts to question his long-distance relationship with el, but that turns out to be dangerous.