黒塗り世界宛て書簡
A song by the producer Frog96, featuring [[Kasane Teto]].

h4. External Links
* "YouTube":[https://www.youtube.com/watch?v=8BekVGwSX3c]
* "NicoNico":[https://www.nicovideo.jp/watch/sm40256068]
kuronuri sekai ate shokan (utau)