The ethereal piano solo, with the occasional ringing of the silver bell, is sad and euphemistic, touching, calm and sad like running water, as if to pour out the faint pain in the mourning heart, which makes people cry after listening to it ...

1 minute and 22 seconds, though short, is enough. 18 years of precipitation, suffering, pain and smile, like being crushed and rubbed together, have become this sad but not hurt music. This song is not only based on Haibara Ai's mood at that time, but also has a complete Haibara Ai as the background. This melody is played in the heart.