閑話休題

Pronunciation

 * んわきゅ [káꜜǹwà kyùúdáí] (Atamadaka + Heiban – [1]-[0])
 * かきゅ [kàńwá kyùúdáí] (Heiban + Heiban – [0]-[0])

Interjection

 * 1) setting idle chatter aside and returning to the main topic