Babanba Banban Vampire (ババンババンバンバンパイア) is a Japanese manga series written and illustrated by Hiromasa Okujima. It began serialization in Akita Shoten's manga magazine Bessatsu Shōnen Champion in October 2021. An anime television series adaptation produced by Gaina aired from January to March 2025, and a live-action film adaptation opened in Japanese theaters in July 2025.
Plot
Ranmaru Mori, a 450-year-old vampire, lives and works at a long-established public bathhouse called Koi-no-Yu. Years earlier, when he was severely injured while being hunted by vampire hunters, his life was saved by a young boy named Rihito, the son of the bathhouse owners. Since then, Ranmaru has remained at the bathhouse as a live-in worker, secretly planning to one day drink Rihito's blood, which he believes will be at its best when Rihito becomes an 18-year-old virgin.
To preserve the "perfect" conditions for this plan, Ranmaru carefully watches over Rihito's life and tries to prevent him from getting into romantic or sexual relationships. However, when Rihito enters high school and falls in love with a classmate named Aoi, Ranmaru begins interfering in his daily life in order to stop their relationship from progressing. While trying to sabotage Rihito's chances at romance, Ranmaru must also hide his identity as a vampire and deal with other supernatural threats.