That Time I Got Reincarated As A Fish || Tensura Fan Fiction
  • Reads 3,419
  • Votes 137
  • Parts 28
  • Time 3h 52m
  • Reads 3,419
  • Votes 137
  • Parts 28
  • Time 3h 52m
Ongoing, First published Jan 04, 2024
Twenty-seven-year-old Ryota Anshin, a marine biologist at one of Tsukuba City's major marine research centers in Japan, was casually diving off the coast of Okinawa with his diving friend when tragedy struck. Saving his friend from a sudden whirlpool, Ryota succumbed to its force and drowned. However, in the throes of breathlessness, a mysterious voice recited unfamiliar commands in his mind.

To his surprise, Ryota wakes up to a new life as a dolphin in an unfamiliar sea. This reincarnation brings extraordinary abilities, particularly the power to command marine life through echolocation. His journey takes an unexpected turn when he encounters the sealed Catastrophe-level monster "Leviathan" Levia, who had safeguarded the sea for a century against a greedy entity. Remembering his past life, Ryota-now known as Rafferty Maelstrom-promises to break Levia's seal and embarks on a quest across the seas.

In return for his commitment, Levia grants him the name Rafferty Maelstrom, a nod to a connection forged in the past. Determined to overcome the failures of his previous life, Rafferty sets forth on a new adventure with a clear purpose. As he adapts to his dolphin form, his genius for conquering spreads across the seas of Tensura, rewriting the narrative of his past failures.

Now, with excitement coursing through the waves, Rafferty's journey unfolds, promising a tale of redemption, discovery, and the boundless wonders of the deep blue.

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What Lies in the Deep by Tempest68
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After a mysterious shuttle crashes into the Pacific Ocean near Kauai Island, an enigmatic young man emerges, harboring extraordinary abilities tied to the sea. Unknown to the world, he is a hybrid creation-part human, part Leviathan-engineered by an ancient alien race to protect ecosystems. Stranded on Earth, he adapts to life on Kauai, finding solace with a new family, including a spirited young girl and her chaotic alien companion. The corporation responsible for his arrival on Earth, Alterra, begins expanding its operations into Earth's oceans, bringing with it the dangers of their greed and recklessness. Their experiments awaken a deadly bacterium, Kharaa, which begins to spread, mutating marine life into monstrous hybrids. This forces the young man to take action, using his immense abilities to protect the ocean while maintaining a delicate balance of secrecy. Union and this boy uncover the unfolding crisis and form uneasy alliances, each bringing unique strengths to the battle. As the infection spreads and villains seize the opportunity to escalate chaos, the young man must decide whether to fully reveal his powers, risking exposure and pursuit by Alterra. Through battles against mutated creatures, tense confrontations with villains, and the race to stop Kharaa's spread, the young man struggles to reconcile his dual existence as a protector and an outsider. With the fate of both the ocean and humanity at stake, he must embrace his role as a guardian, confronting not only Alterra but also the deeper mysteries of his creation. Disclaimer: I do know own the pictures, videos, songs, GIFs and some characters in this story, they belong to their original owners I do not any of series, animes or games used in this story, they belong to their original owners Warning: 18+, sexual content, blood, gore and extreme violence, plus mentions of alcohol and drug abuse, also mentions of suicide
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What Lies in the Deep

4 parts Ongoing Mature

After a mysterious shuttle crashes into the Pacific Ocean near Kauai Island, an enigmatic young man emerges, harboring extraordinary abilities tied to the sea. Unknown to the world, he is a hybrid creation-part human, part Leviathan-engineered by an ancient alien race to protect ecosystems. Stranded on Earth, he adapts to life on Kauai, finding solace with a new family, including a spirited young girl and her chaotic alien companion. The corporation responsible for his arrival on Earth, Alterra, begins expanding its operations into Earth's oceans, bringing with it the dangers of their greed and recklessness. Their experiments awaken a deadly bacterium, Kharaa, which begins to spread, mutating marine life into monstrous hybrids. This forces the young man to take action, using his immense abilities to protect the ocean while maintaining a delicate balance of secrecy. Union and this boy uncover the unfolding crisis and form uneasy alliances, each bringing unique strengths to the battle. As the infection spreads and villains seize the opportunity to escalate chaos, the young man must decide whether to fully reveal his powers, risking exposure and pursuit by Alterra. Through battles against mutated creatures, tense confrontations with villains, and the race to stop Kharaa's spread, the young man struggles to reconcile his dual existence as a protector and an outsider. With the fate of both the ocean and humanity at stake, he must embrace his role as a guardian, confronting not only Alterra but also the deeper mysteries of his creation. Disclaimer: I do know own the pictures, videos, songs, GIFs and some characters in this story, they belong to their original owners I do not any of series, animes or games used in this story, they belong to their original owners Warning: 18+, sexual content, blood, gore and extreme violence, plus mentions of alcohol and drug abuse, also mentions of suicide