I’m docking one point only because the "running out of ink" trope is a little overdone in this genre. However, the execution (drawing with a stick in mud) was raw enough to forgive it.
To support the creators and the industry, it is always recommended to read Drawing: Saikyou Mangaka wa Oekaki Skill de Isekai Musou Suru through official channels. I’m docking one point only because the "running