Yuuki Aira — A Promise (Sekai Saikou no Ansatsusha, Isekai Kizoku ni Tensei suru ED)
Artist: Yuuki Aira
Song title: A Promise
Anime «Sekai Saikou no Ansatsusha, Isekai Kizoku ni Tensei suru» ending theme
Artist: Yuuki Aira
Song title: A Promise
Anime «Sekai Saikou no Ansatsusha, Isekai Kizoku ni Tensei suru» ending theme
Artist: Ninomiya Yui
Song title: Dark seeks light
Anime «Sekai Saikou no Ansatsusha, Isekai Kizoku ni Tensei suru» opening theme