ソニックブームでしょう
sonikkubūmudeshō
1. Probably a sonic boom.
Noun
#1287554
1. Probably a sonic boom.
1. it seems; I think
2. right?; don't you agree?
1. sonic
1. sonic boom
1. big boom; big craze
1. baby boom
1. current obsession; current kick
1. supersonic
1. hypersonic