Prequel vignettes to the Kemurikusa TV series were released on Tatsuki's official Twitter. They feature an irregular episode numbering as follows: ep 0 (which is actually unnumbered), 0.5, 0.6, 0.7, 0.8, and 0.9. Following the conclusion of the Kemurikusa TV series broadcast, Tatsuki released another vignette the next week, numbered ep 12.1, on both his Twitter account and official YouTube channel, bringing the total to 7 web shorts directly connected to the TV series.