It’s easy to read a lot of meaning into those little marks, but they’re often the artist’s way of letting us see themselves in the work. In semiotics we’d say a symbol can be a signifier of a feeling, a hint of the creator’s mood, or even a simple aesthetic flourish. If the background feels coherent or repeats a motif, it probably has intent—maybe a nod to the original manga, a personal joke, or a reminder of a theme. If it’s just random, it could be decorative, a way to fill space, or an unconscious habit. Either way, noticing them shows you’re already picking up on the layers, which is half the fun of interpreting art. Keep looking, and see if the symbols repeat elsewhere; that’s often the clearest hint of deeper meaning.