Haikyuu!! (ハイキュー!!?) is a Japanese shōnen manga series written and illustrated by Haruichi Furudate that revolves around a high school volleyball team and the relationship between players Hinata Shoyou and Kageyama Tobio. Individual chapters have been serialised in Weekly Shōnen Jump since February 2012, with bound volumes published by Shueisha. A television anime series produced by Production I.G premiered on April 6, 2014 on MBS, other JNN stations, and with English subtitles on Crunchyroll.
From episodes 1–13, the opening theme song is "Imagination", performed by SPYAIR; while the ending theme song is "Tenchi Gaeshi", performed by Nico Touches the Walls. From episode 15 on, the opening is "Ah Yeah", performed by Sukima Switch; and the ending is "LEO" by Tacica. "Ah Yeah" is also used as the ending for Episode 14, which has no opening. The anime has been licensed for digital and home video release by Sentai Filmworks.
A second season was announced and began airing on October 4, 2015. The first opening theme song is "I'm A Believer" (アイム•ア•ビリーバー) by SPYAIR; the ending theme song is "Climber" (クライマー) by Galileo Galilei. From episode 14 on, the opening is "FLY HIGH" performed by Burnout Syndromes and the ending is "Hatsunetsu (Fever)" (発熱 - はつねつ) by Tacica.