急転直下
  きゅうてんちょっか
  noun (common) (futsuumeishi)
  noun or participle which takes the aux. verb suru
  suddenly and precipitately
  take a sudden turn
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  九天直下
  きゅうてんちょっか
  noun (common) (futsuumeishi)
  falling headlong
  plummeting
  sudden crash
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