Chō is the 7th major single by female J-pop singer-songwriter Tsukiko Amano, from her third major album . It was released on November 12, 2003, and reached a peak of No. 49 on the Oricon weekly charts, charting for 8 weeks. The song is a mixture of pop and heavy rock, containing a guitar heavy chorus and interlude. The song was used as the theme song of PlayStation 2 survival horror game Fatal Frame II: Crimson Butterfly. The lyrics of the song tie in with the main themes of the game, and the PV was shot using similar imagery to that seen in-game, including crimson CG butterflies, which can also be seen on the cover. The song was also included on Catalog, Amano's "best of" album.