C1426 Where's the Island Why Is It Gone

... ""

The Grand Elder sighed and said, "Princess Namei, it is not that easy. If the area is small, but with our strength, we can set off waves. We forced them into the water, but the area of that group is very large. Between each island, the furthest distance is a hundred miles. How much power is needed to drown all of the islands?"

" I know! I've been there before