Sadistic Dreamer

Hey y'all! So, Yuki scripts and writing has never been a problem for me, I get those out no problem, usually in two or three sittings tops and with minimal revising required. But what's eating, loud and sloppy, slurp after slurp, like a cup of noodles straight out of the microwave, is why I can't do

Been wanting to challenge myself lately, so let's see, I want to write a short story based on one of these characters, so who will it be? (Note that I own neither of these art pieces.)