Even if he tried to move forward, even if he wasn't able to say goodbye properly, Hikaru's shadow was always with him. Everyone had moved on, after all "Hikaru was alive". But he was still stuck in place, searching for the love he once had in an empty space.

It was just like a spell or curse that he could never break. He was weighed down by his baggage and mistakes. Two people who were always together are torn apart. But even if Hikaru's everything loses its shape one day, he'll always be here within him. That's all there is to this story.

Hikaru's everywhere he goes, Hikaru is all he sees. But not the real Hikaru. He knew that his real love was dead long ago. This was just a cheap imitation. You were just a copy of Hikaru.