Gintama° - episode 40 - 12 Jan, 2016

Overall episode #305 Shogun Assassination Arc Part Six: As the bloodbath battle continues, Gintoki and Takasugi continue to encounter their past from their temple school on how to be a true samurai. As they remember what they endured, Takasugi gets struck in the back by a long blade weapon thrown by non other than Oboro of the Yata-Garasu as he appears in front of Gintoki. (Source: Wikipedia)