Lum and Ataru head to a real Onitsuka Tiger shop in a single-episode ONA made as a collaboration commercial between the shoe brand and Urusei Yatsura. The scene is an original story that does not appear in the 2022 series. Their shopping trip goes sideways when Ataru starts flirting with the store attendant, and Lum retaliates by attacking him. Expect a brief blend of comedy and romance with a sci-fi and supernatural flavor, built around the familiar pair.