C121 Sea Prison(1)

Hualala, hualala!

Waves surged on the boundless ocean, and each wave surged more violently than the last, and it revealed the boundlessness and surging of the ocean.

Beneath the ocean was a bottomless abyss, and the pitch black abyss was like a natural chasm that lay at the bottom of the ocean. No one knew where it lay, and no one had ever come here before