ゲストボーカルだったら
gesutobōkarudattara
1. If/when a guest vocalist
Noun
1. If/when a guest vocalist
1. if it's the case
1. guest
1. vocal (performance); vocals
2. vocalist; singer
1. not be found
1. If it comes out; When it comes out
1. If/when topped; If/when crowned
1. If/when shown; If/when I show
1. After; When…passes