Hwaja, About Death Recommendations
Being Korean webtoons rather than manga, they use a different format suitable to read on a mobile device. Of course, their similarites don't stop there.
They are darker and better suited for a mature audience, whereas their simplicity and small number of chapters (Hwaja by the way is 35, not 10 chapters) makes them easy to be binged.
About Death is by far my favourite though (and among my favourite works), because of its magnificent stories and messages.