You come in expecting a novelty tie-in and leave weirdly wrecked by a pop single you've heard in every grocery store since 2021. That's the trick here: Rui Ikeda's character design and Naomi Izumida's direction take the vampire man and human woman at the center of it and play the whole thing as doomed romance instead of music-video decoration, so the chorus stops being an earworm and starts being a confession. CALF handling the animation is the tell. This is indie hand-drawn sensibility aimed at a chart topper, and the linework carries more grief than a four-minute runtime should be able to hold. Romance is the entire engine, no subplot to hide behind, which is why the ending lands like a gut punch rather than a fade-out. Watch it once for the novelty, then sit through it again with the song you thought you were sick of, and notice you aren't anymore.

Bad Habits is a one-episode animated music video made for Ed Sheeran's song of the same name, the lead single from his fifth studio album. Japanese illustrator and manga artist Rui Ikeda teamed up with Sheeran on the project. The video tells a tragic love story between a human woman and a vampire man. Naomi Izumida directed it, and CALF handled the animation.