A promotional short for the Japan Racing Association's Umabi service, lasting 2 minutes and 15 seconds (or 4:30 including the rerun), has been developed. Originally interactive, viewers are able to personalize their own character, who will make appearances in the short at designated intervals. For this video, a default character has been utilized. The VAs featured in the first half are Mikako Komatsu and Sumire Uesaka for Popuko and Pipimi, respectively. For the second half, Ryuusei Nakao and Norio Wakamoto voice Popuko and Pipimi. Notably, this is the same VA team as the one featured in episode 3 of the TV series.