Ramen girl and panda stretching their backs.
If you sit for a long time, your back muscles will become stiff. Combined with the cold, the stiffness of your back muscles will be greater than you would expect. If you suddenly stretch your body, you may injure your cervical vertebrae, so please be careful. ... I tell myself.
I tried using a magic pen brush. I wondered if a round one would be better than a flat one, but this is it for now. I like the unevenness of the black density that you can see when you apply layers of real black magic marker. I also hope to create an analog look (while struggling with the file size).