"Science Worship" (三沢塾 (かがくすうはい) Kagaku Sūhai?, lit. "Misawa Cram School") is the seventh episode of the Toaru Majutsu no Index anime series and the first episode of the Deep Blood Arc. It was first broadcast on November 15, 2008, and was directed by Tomizawa Kazuo, the script for the episode was written by Tanizaki Akira, and storyboard is continued to be done by series director Nishikiori Hiroshi.