ISUCA - Season 1 Episode 8 Trials
Overview: Sakuya is in a coma now that she's lost her spiritual energy, and Shinichirou would like nothing more to save her. Suseri decides to undergo the exorcism ritual after seeing Sakuya in her state. She must subdue a lightning beast on her own in order to make it into a shikigami, and during the fighting we learn about Suseri's hidden past and her feelings towards Sakuya.