There may not be mainstream popular 'Artemis kills Percy' fanfics because it goes against the typical heroic image of Percy. Most fans like to see Percy succeed and be the hero. But in some smaller, more experimental fanfic communities, there could be some interesting takes on this concept that have a following among those who enjoy exploring darker or more unconventional storylines.
One possible 'Artemis kills Percy' fanfic could be a story where there's a misunderstanding. Maybe Artemis is under a spell that makes her think Percy is a great threat to the natural order she protects, and in the heat of the moment, she takes action. Another could be a darker, alternate universe fanfic where the gods' personalities are twisted, and Artemis has been corrupted into believing Percy is an enemy she must eliminate.
It could be due to a lack of information. Artemis might not have known all the facts about Percy. For instance, if there was some sort of illusion or false information spread around, she could have misjudged the situation and accidentally killed him. Also, perhaps in the heat of a battle, she didn't have time to properly identify her target and made a tragic mistake.
The story could also deal with the aftermath in a more emotional way. For example, Annabeth, who was close to Percy, might go into a deep depression. Artemis, realizing the full impact of what she has done, might then embark on a journey to atone for her mistake. This could involve helping those Percy cared about, or trying to restore the balance that Percy's death has disrupted in the mortal and godly worlds.
It depends on the specific comic series or storyline. Some comics show Aqualad as gay, while others might not explicitly address his sexual orientation.
It depends on specific comic runs. In certain versions, Aqualad's sexuality was explored and presented as gay. But not all interpretations follow this.
The demigods would be in shock. Percy was a leader among them. His death at the hands of Artemis would make them question the motives and stability of the gods. Annabeth, in particular, would be devastated. She would likely be consumed by grief and then anger, and might even set out on a quest for revenge against Artemis.
Aqualad's fate in the comics is not always the same. Sometimes he does die, but it's all part of the ever-evolving and diverse world of comics, where characters' fates can change based on various factors and creative decisions.
The balance in nature would be disrupted. Artemis is the goddess of the hunt, the moon, and nature. Her death could cause strange phenomena in the natural world, like animals going wild or the moon's cycle becoming erratic. This would not only affect the demigods but also mortals who depend on the stability of nature.