This is inspired by something I read by Squiggly29 called Of Snakes and Water.

Being a demigod is hard. Being a child of one of the big three was harder. Being the son of Medusa and Poseidon seemed impossible. Many of you will probably be aware of the story of Medusa. Of course, it's needless to say that after her transformation, Medusa was angry. Angry at Poseidon, angry at Athena, angry at the gods in general. For many years, enraged with bitterness, she used her monstrous form to kill and decorate her lair with stone corpses. That was until she was killed by Perseus. After that, Medusa was different. Anger was replaced with melancholy and bitterness with hopelessness. She stayed hidden, wallowing in self-pity and guilt. This is how she spent the next couple of centuries.

However she soon wasn't the only one, Poseidon was also in despair. Due to the events of the Second World War, it had been decided that it wasn't safe for the big three to have demigod children and though Poseidon knew this didn't mean that he couldn't have any children. He was still upset with the restrictions put upon him. It's not his fault his demigod children are too powerful.

In an event orchestrated by the fates, the two former lovers meet again. At first, there was a lot of shouting on Medusa's part while Poseidon hid behind a rock avoiding her gaze for it could turn even gods to stone. But eventually Medusa's breathe ran out and her strength pittered away, leaving her a crying heap on the ground. This is when Poseidon finally came out of from his hiding place. He knew that Medusa's fate was at least partially his fault and seeing the monster so vulnerable, made him do something that was probably extremely stupid. He silently moved forward and sat down next to the gorgon. That night they talked until sunrise. Each bearing their soul to the other. By the time the had finished, Medusa had forgiven Poseidon and Poseidon now saw Medusa as more than a monster. After this, the god visited the gorgon on a regular basis. The gorgon wore a piece of cloth as a blindfold during these visits as to avoid killing the god. The two soon were firm friends. Not only this, but the god started to notice changes with Medusa. She looked more human. Her skin was returning to its previous healthy glow. Her features looked returning to what they once were. Her hair still hissed, but now the noise was more soothing than ominous to Poseidon. Medusa's gaze was also still deadly although a piece of cloth effectively blocked her gaze.

After a couple of decades, Poseidon realised he had fallen in love with Medusa and thankfully for him, the feeling was mutual. They became lovers once more and after another decade, Medusa fell pregnant. 9 months later, she gave birth to their child. A small girl with black baby adders for hair and bright green deadly gaze. Poseidon loved his daughter and made sure to reassure his lover of that too. They named her Korinna. Three years later, Medusa gave birth to another child. A son this time and he too had the same features as his sister. He was named Perseus, which was an admittedly strange decision on Medusa's part.

The two children grew up considerably well with their mothers' undivided attention and their father visiting every so often. Korinna was kind and passionate while Perseus was adventurous and outgoing. They seemed quite different, but the one trait the siblings did share was a sharp tongue. A trait both used while fighting with each other over random and pointless things.

However, as the siblings grew older, they both became curious about the outside world beyond their home and the forest around it. Their mother didn't speak often about the world outside of their little bubble and when she did it was usually to warn them about demigods and gods. One day Perseus, at the age of 14, decided he was going to go explore the world for himself. Korinna thought this was a horrible plan and made sure to state just how stupid her brother's plan was. But Perseus was determined, he was going to the human world and nothing was going to stop him. Korinna merely packed a bag and followed his lead. If her little brother was leaving, she needed to make sure that he was safe and so the two young gorgons made their way to the human world. This was either going to end badly or be the best thing ever.