"Kōya Ruten" (荒野流転, Wilderness Vicissitudes) is the sixth single of J-pop duo FictionJunction Yuuka.
This single included opening song of the anime Bakumatsu Kikansetsu Irohanihoheto, as well a song from the musical Angel Gate: Haru no Yokan (Angel Gate: 春の予感～) in which Yuuka Nanri, the vocalist of FictionJunction Yuuka, stars in.
Both songs were composed by Yuki Kajiura.
This single peaked at #13 on the Oricon weekly charts.
This 2000s pop song-related article is a stub.