-a story about letting go
"They say you could sometimes find all the mysteries of the universe on someone's hand, but I found much more beyond that, and I haven't even held his hand yet."
The Butterfly Effects - where small, seemingly insignificant events could lead to a much larger effect.
Just like how Tsukishima Kei falls in love with Kuroo Tetsurou, slowly, over time, through the small moments they've shared together over the years since they've first met.