YOLO (You Only Live Once) was one of Kanami's very first compositions. Kanami kept the composition "in her pocket" after Band-Maid was formed because their management company didn't accept her penned songs, preferring their own contracted writers. Once the band changed management companies and began writing and recording their own music, YOLO was included in an album. There is a video on RU-vid of Kanami playing the song in a piano solo. It is a quietly beautiful rendition of the melody, proving that Kanami is quite an accomplished pianist as well as guitarist.
In this video you got an idea what the song is about ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-sSNA_CZoIqs.htmlsi=w4pGoPknPBXESO0L&t=662 ( put the close caption in auto translate , is fair enough to understand)