Ryuuguu Fantastica

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竜宮ファンタスティカ

During the Houryou festival, held every seven years, the oceanic gates of the Ryuuguu, the Dragon Castle, are said to open. On one such night, Yura finds a boy named Nao washed ashore on the beach. With no family or connections, she takes him in and raises him as her younger brother. The two grow up happily together over the next seven years.

As the next Houryou festival approaches, Nao begins to act strangely. Yura struggles to understand the changes in him, unaware that the festival's return may hold secrets tied to Nao's mysterious past and the legendary realm beneath the sea.

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