To write a believable fanfic, you need to research their mythological backgrounds. Know about Apollo's powers and his character traits like his love for beauty and art. For Hyacinthus, understand his mortal nature and his charm. Then, create a story that fits within the framework of their relationship in the myths.
One idea could be exploring how Apollo first discovers Hyacinthus. Maybe it's during a hunt and Apollo is instantly smitten by Hyacinthus' beauty and grace. Another could be a story where they compete in various athletic contests together, showing their friendly rivalry and growing bond.
In the fanfiction, Artemis' character could develop by showing her different sides. She is often associated with the hunt and the moon. But with Hyacinthus, she might show a more nurturing side. She could start to care about the small things that Hyacinthus loves, like a particular flower. Hyacinthus, on the other hand, would be developed as a character who grows in wisdom. He listens to Artemis' tales of the gods and goddesses and uses that knowledge to better his own community. He also becomes braver as he faces the challenges that come with being associated with Artemis.
One possible plot could be that Artemis, while wandering in a forest, comes across Hyacinthus. At first, they are both cautious as they are from different mythological realms. But then they start to share stories of their respective lives. Hyacinthus tells Artemis about his love for flowers and how he enjoys the beauty of nature. Artemis, in turn, shares her experiences of protecting the forest and its creatures. They could form an unlikely friendship, with Artemis promising to protect Hyacinthus from any harm that might come his way in the forest.
Apollo 18 isn't real. It was created for entertainment purposes and doesn't represent actual events. The story was made up to thrill and engage the audience.
The story of Apollo 18 is mostly fictional and based on speculation. Some claim it involved encountering unknown entities or uncovering hidden lunar secrets, but there's no solid evidence for these claims.