"Mephisto" (メフィスト, Mefisuto) is a song by Japanese rock band Queen Bee.

The song served as the ending theme of the first season of Japanese anime series Oshi no Ko.

[1] On March 2, 2023, Queen Bee announced that they would perform the ending theme of anime series Oshi no Ko, titled "Mephisto", alongside the band's Japan tour Mephisto Shōkan.

[3] The music video, directed by Sayaka Nakane, was uploaded on May 17, depicting the life of idol Avu-chi.

[4] Titled after German folklore demon Mephistopheles, lead vocalist and songwriter Avu-chan explained to Billboard Japan in August 2023 that they used the motif of the legend's protagonist Faust for the main idea of "Mephisto", alongside authors who "richly depicted the doings and passion of people", e.g. Go Nagai, Yukio Mishima and William Shakespeare.