Volcanic Eruption on Sakura Island - S1.E10

The Sakura Island nearby had erupted rapidly. A man from a remote village called Seylla of Sakura Island had rowed to the ship, asking for Tatara's help to release his villagers from the clutches of the Red King. Right away, Sarasa set out to help him despite Saki disapproval. With Hayato on board, they set out to the unstable Sakura Island ahead. Using Ageha as a bait, Shidou and 3 of his generals manage to lure Sarasa and Hayato into a ruin city before attacking them. Sarasa was captured by one of Shidou's general when a gigantic earthquake pulls everything down.