Overdrive

The Overdrive is a massive explosion of great power that happens twice in the series, once fifty years before the series began. This explosion was caused by the great power of the Dark Bring. When Shiba underestimated the Dark Bring's power and was happy at last because he thought there was peace, Plue started to shake in fear and anxiety, hinting the massive destruction coming. However, by the time Shiba found out what was going to happen, it was far far too late.