All 13 episodes of the Japanese anime based on the manga series written by SoborouIsin. The show follows the young male students of Kawanuma West High School as they find themselves involved in a series of awkward romantic situations with their attractive female teachers. The episodes are: 'First Period', 'Second Period', 'Third Period', 'Fourth Period', 'Fifth Period', 'Sixth Period', 'Seventh Period', 'Eighth Period', 'Ninth Period', 'Tenth Period', 'Eleventh Period' and 'Twelfth Period'. The collection also includes the OVA episode 'Thirteenth Period'.