Butterfly Effect

"Butterfly Effect" is a song by Shiritsu Ebisu Chuugaku that opened the 2014 television anime Ryuugajou Nanana no Maizoukin, also known in English as Nanana's Buried Treasure. It served as the series' OP 1, and the anime was animated by A-1 Pictures.

Shiritsu Ebisu Chuugaku released "Butterfly Effect" as its seventh major single on June 4, 2014. The release came out in multiple editions, including a regular edition and limited editions. Kenichi Maeyamada wrote the lyrics, Tomokazu Matsuzawa composed the music, and CMJK arranged the song.