Gintama' - episode 36 - 04 Dec, 2011

Overall episode number: 237 Matsudaira forces the Shinsengumi to take a vacation to the ski slopes. He tells them to enjoy their time off, but in reality, they've been sent to guard the Shogun on his first snowboard trip. The Shinsengumi members are doing their best to protect the Shogun since their lives are on the line, but then they run into some familiar faces... (Source: Crunchyroll)