Maeshima Mayu — story (Isekai Ojisan OP)
Artist: Maeshima Mayu
Song title: story
Anime «Isekai Ojisan» opening theme
Isekai Ojisan
Iguchi Yuka — Ichibanboshi Sonority (Isekai Ojisan ED)
Artist: Iguchi Yuka
Song title: Ichibanboshi Sonority
Anime «Isekai Ojisan» ending theme