King Posetune

**King Posetune,** born **Posetune Ryugu,** is the current ruler of Atlantis as part of the Ryugu Dynasty and has been for the past 5000 years.

## Etymology

The name "Posetune" is, in the mermaid language, "blue water". However, his name is significant because when ancient human explorers heard his name, they debated on whether they heard it as "Neptune" or "Poseidon". This disagreement would manifest later in the form of the distinction between the Greek Gods and Roman Gods.

## Appearance and Personality

Posetune appears much like he is depicted in Greek and Roman Mythology and also like many other mermaids, with a long green tail. His hair has lost much of its brilliant green translucence with age, but otherwise he looks much like most other mermaids. He is often found and depicted with his trident, the Trident of Atlantis, the official symbol of his kingship, but unlike its depiction in mythology, he does not require it to cast his magic and it has no inherent power of its own.

Posetune is quite a friendly kind in spite of his appearances and foreboding photographs, as he was taught to be by his father and his father before him. This was because being a kind a listening king is one of the values all members of the Ryugu Dynasty must practice as king. That all said, Posetune does have kind of a short temper, and if he is angered, he does indeed become the furious sea god that many people associate with the Greek and Roman deity.

## History

Posetune was born around 10,000 BC to King Ryugu MMMLIV, his predecessor, who was already 13000 years old when he had Posetune. Posetune would continue this tradition of having his one allowed child late in life when he had Finana Ryugu in 1000 AD, at an age around 11000 years old. Most mermaids have their children at 5000 years old for comparison.

When his father died of natural causes in 3000 BC, Posetune took over the kingdom of Atlantis for him and has ruled ever since then as its king. When Posetune himself dies, which is not expected until 10,000 AD, Finana will succeed him and hopefully serve for another 9000 years or more after that.

Posetune's rule was accompanied by much change, especially from humans as they began to develop at an exponential rate. He entrusted the army of Atlantis to support Finana during the Ethyrian War, and commissioned the entire Knowledge District of Atlantis to try and counteract Pomufication when all his citizens began turning into Pomu.

Later on in his rule, he was faced with another crisis when humanity began to turn on magical creatures, becoming fearful of them. He helped devise the Great Concealment Spell, but this in turn put a Veil over Atlantis that prevented humans from getting in but also mermaids from getting out. Posetune sought ways to get through and also to get through to the humans as well to try and restore an alliance with them. The ultimate test of faith in his daughter and in this mission of his came when she wished to surface via a rebirth spell to take notes about humanity as an anthropologist, hopefully finding out important information that could help in this endeavor.

Posetune eventually was persuaded and his daughter was reborn. Posetune knew it would only be a few decades at most for his daughter to be able to return, a blink of the eye in a mermaid life, but still felt empty in her absence. In Story Reality, during Dragon-Human Reveal, the Veil fell and Finana was eventually reunited with him, and he elected her the ambassador between humans and mermaids due to her extensive notes and experience with both sides. In Stream Reality, Nijisanji gifted Finana the ability to return to Atlantis, where she often visits with Posetune to share her notes about humanity.

## Powers and Abilities

King Posetune deserves his reputation as God of the Sea as seen in Greek and Roman mythology due to his immense power and immense control over the ocean. He is by far the most powerful being in Atlantis, although his daughter may eventually surpass him in time.

Mermaid Physiology: As a tropical mermaid, Posetune has access to mermaid physiology. This includes enhanced strength as well as powerful fins which enhance his swimming speed up to 60 meters per second, faster than many cars. He also has an enhanced healing factor and increased durability thanks to his mermaid scales (which are almost as strong as dragon scales, which the mermaids inherited from their ancestors, the dragons). Of course, he has gills as well which allows him to breathe and survive underwater indefinitely.

Aquatic Life Manipulation: As part of his mermaid royal lineage, Posetune can bless normally non-conscious fish with limited sentience, and can control large amounts of sea life such as coral and kelp.

Aquakinesis: Posetune has control over water and water-related phenomenon, including thunderstorms over seas and even waterspout tornadoes and whirlpools. This gives Posetune the ability to manipulate the seas in such large scales as to be considered a god by most ancient people observing him in the process.