Kobo and Calli sing - Firework by Katy Perry (Duet)

♡ Plastic Bag... ♡ Mori Calliope and Kobo Kanaeru sing Firework by Katy Perry (fan made duet) I don’t claim/own any material used during this video (art, vocals, music etc.) Credits: Vocals: Mori Calliope: Youtube - Twitter - Kobo Kanaeru: Youtube - Twitter - Hololive EN: Youtube - Twitter - Hololive ID: Youtube - Twitter - Artists: (lllust) hievasp (Kobo Kanaeru) - (Illust) 十九百/つくを (Mori Calliope) - Other Music Sources: Yukio Ch. Youtube - https: