サヨナラ・グッバイ (Sayonara·Goodbye)

Background
"Sayonara·Goodbye" is an upbeat song by Noboru↑-P that seems to be about breaking up with someone over the phone. However, on closer examination of the lyrics, some fans have determined that it is actually a song about bereavement. Like "Koi wa Kitto Kyuujoushou☆", Noboru↑-P says that this song was originally going to be death metal.

This song has entered the Hall of Fame.

Concerts
This song was featured in the Miku no Hi Kanshasai 39's Giving Day concert.