ソニックブームなら
sonikkubūmunara
1. If/when sonic boom
Noun
#1287554
1. If/when sonic boom
1. sonic
1. sonic boom
1. big boom; big craze
1. baby boom
1. current obsession; current kick
1. supersonic
1. hypersonic
1. nostalgia boom; revival of interest in old-fashioned things