Phrase included when a written or drawn work is incomplete and will be continued in the next illustration or comic. Also included at the end of a TV episode when a story had to be cut short due to time constraints, usually at a cliffhanger situation.
Gained memetic infamy when Jojo no Kimyou na Bouken used the text within an arrow (together with giving the final frame sepia tones) to end most episodes (typically on a cliffhanger) of the anime adaptations with, together with the opening riff of the song "Roundabout" by Yes as the first season's ending.