I just did my Poetry Fishbowl this week, and there's a poll up now to choose a free epic poem, as one of the perks. Everyone is welcome to vote. Two of the three options are poems that feature asexual characters. "The Odd Trio" is explicit about that; it's part of the plot in which three very different people form an adventuring party and eventually a family. You can meet the ace, Hope, in "Hope of the Future." "Alone in the Bee-Loud Glade" is more subtle; Rowen was originally introduced in "Rosehips and Honey" and is, per the prompt, "a very affectionate biromantic genderqueer character." So if you'd like to see more poetry about asexual characters, you can go vote for that.