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We quickly made our way into the Seaside Treasury once I was done with my own things, wielding my powerful Blazing Katana and with my two floating Black and White Spears, while having my trusty Dungeon Knife and my Blue Necklace transformed into a giant tiger made of water and ice, I looked into the depths of the entrance leading to the interior of the now-fearsome dungeon.
The entrance was a long stair leading down, there was sand and even corals, crystals, starfish, and snail shells lying around everywhere, and once we stepped into the last stair, we were greeted by a beautiful scenery resembling a seaside sanctuary. The stairs ended right in the middle of a small island, while the rest of the place was the sea, with several small islands everywhere. However, down below into the water, the real dungeon started, with several intricate ruins and monsters roaming around.
Check "The Protagonist's Sister Is Actually the Strongest"!