Ostara/Kirara Seika

Ostara is a song sung by Avanna Rachel, Ruby Allegri, Maika Hayashi, and Luka Megurine with Prima Grlic doing the chorus. It is the two-hundred-and-ninety-third track, the two-hundred-and-ninety-fourth track, the two-hundred-and-ninety-fifth track, the two-hundred-and-ninety-sixth track, and the two-hundred-and-ninety-seventh track in Other Vocaloid Songs 62: Making A Comeback Volume 10.