1年2ヶ月20日 (Ichinen Nikagetsu Hatsuka)

1 Year 2 Months 20 Days is a song sung by IA Akasaka, Lily Masuda, Mizki Himemi, and Miku Hatsune. Trina Wylington, Ari Lambert, Lola Wylington, and Starlight Lafayette have their own version of this song as well. It is the one-hundred-and-eighty-second track in Other Vocaloid Songs 141 and an Album Only song.