Shattered Dream / Hunter x Hunter

We often find ourselves imagining things that seem impossible, don't we? So, what do you think would happen if a single person was given the rare chance to come face-to-face with the very things they thought were out of the so-called impossible possibility? It's an intriguing idea, isn't it?

This is a Killua x Reader/Self-insert Fanfic.
Other than the OC including all characters, the main plot belongs to Yoshihiro Togashi, the mangaka of Hunter x Hunter.