The Tatami Galaxy (2010)
Original Title: 四畳半神話大系
An unnamed third-year Kyoto University student reminisces about his early campus life. He meets Ozu whose encouragement sets him on a mission of dubious morality. He contemplates his affection for a younger female student, Akashi, and makes promises to her, usually of and within a romantic subtext. The culmination of his dubious missions often conflict with his interest in her in some way.
The Tatami Galaxy - watch online: streaming, buy or rent
Currently you are able to watch "The Tatami Galaxy" streaming on Netflix.