【BIRTHDAY COUNTDOWN + REVEAL】cake, call-ins, and countdowns!! I feel like I’m 4?!

new mv: ーーーーーーーーー Request from hololive Production to underage viewers: Please be sure to check the link below before viewing our content. ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝ thumb: