Reunion (ClariS song)

It is set in common time and moves at a tempo of 135 beats per minute in the E-flat major key throughout the song.

The introduction starts with the synthesized music accompanying ClariS' vocals, and uses a bridge to transition into the first verse, followed by the chorus.

It begins with a set of metal gates that open up into a park where trees, flowers and a fountain sprout out of the ground.

Semi-animated illustrations of ClariS by Hiro Kanzaki, the original character designer of Oreimo, are introduced singing in front of the fountain.

The scene is replaced with a public school courtyard featuring cherry blossom trees and petals all around Clara and Alice.