KOAN Sound
https://gyazo.com/595667910587eca49bdccb60f29cee89
https://koansound.com/
https://x.com/koansound
https://www.instagram.com/koansound
https://www.youtube.com/@koansound
https://soundcloud.com/koan-sound
https://open.spotify.com/intl-ja/artist/1NCLweIUpq8knzemBwAwoo
音楽ユニット
osu! Featured Artist
https://osu.ppy.sh/beatmaps/artists/49
https://osu.ppy.sh/home/news/2019-09-20-new-featured-artist-koan-sound