Following the premiere of the summer 2026 anime Though I Am an Inept Villainess in Japan, the music videos for the opening and ending theme songs were released on the artists' respective official YouTube channels. Singer-songwriter milet provides the opening theme song "Sunny." She made her major debut from Sony Musi Labels' SME Record label in 2009. In recent years, she has become particularly well known among anime fans for her contributions to the theme songs for the Demon Slayer: Kimetsu no Yaiba and Frieren: Beyond Journey's End series. "Sunny" released digitally on July 12. milet "Sunny" Music Video Comment from milet: "I want to see this world through your eyes." I, too, have once wished for something like that. This is a story that begins with the body-swapping of Reirin and Keigetsu. I believe there is a world that can only be seen because it is the two of them, and I am very happy to be able to dive into that world through the song "Sunny." I am sure that the two of them will find the answer together. In their own way, as "inept villainesses," while enjoying the journey. I would be happy if you could enjoy "Sunny" along with the anime itself. Thank you very much.