From  RyokoNoKalo

Here is King Neptune and Queen Anahita, the rulers of the Kingdom of Poseidon City. Sitting on their Coral Garden Thrones, the kind and caring rulers of the kingdom make sure to keep their people safe and happy like Neptune's father before him. Anahita, his wife, spend time in the gardens, the library, and with her husband. Whenever she and Neptune goes for a swim around the kingdom, she interacts with the people and hold events for the people during the season.

With issues from the Abyss Empire declaring war on the Kingdom, Neptune and his wife would be putting their faith in their new Battlemaster, the Royal Guards, and their Warriors to defend their kingdom and their waters.

In my Poseidon series, They will be Maku's parents as he is a prince of the sea along with his brothers, Hania, Amor, Alo, and Anpaytoo, his sister.