I haven't read this story in awhile but I still remember how much it stuck out, and no, it's not because of the cover.
This FANFICTION is in the PERCY JACKSON fandom and despite being somewhat stereotypicial, the writing is satisfactory and it's not a straight up 'Percy was cheated on, he became Guardian of the Hunt, the Hunters are sadists and Artemis falls in love with him. The End'.
Despite that being the vague summary of the plot, there is reasoning behind events and it has a reasonable timespan between events. It's also one of the rare gems.in this category that are COMPLETED.
https://www.wattpad.com/story/83806775