"Ojisan de Umeru Ana" is a Japanese manga and anime series written and illustrated by Shinji Makari and Ryuji Tsugihara. The story revolves around a young boy named Akira who gets buried alive by his grandfather, Ojisan, in a hole in the ground.
If you're interested in reading "Ojisan de Umeru Ana," I recommend checking out the official English translations available online. Approach the series with an open mind, as it deals with mature themes and can be quite intense at times.
The manga features a unique art style, with a blend of dark humor and psychological elements. The anime adaptation (if it happens) will likely bring the story to life with its own set of visuals and sound design.