Finished season 2 now looking to Sekirei manga
which of the 155 some chapters did season 2 leave off at or do i have to read all the chapters to catch up to season 2?
6 months later (sorry) I would recommend starting from about chapter 59 or so, which is where the anime started diverging from the manga pretty significantly (at first with Yukari and Shiina). At first it's the B-stories that diverge…the main plot stays pretty close to what was in the adaptation (or vice-versa) until after Matsu gets done with her extended history lesson in chapter 73. Then all bets are off.