S1·E48 The More You're Alike, the More You Fight / Whatever You Play, Play to Win

Part 1 - A group of assassins want to take Hijikata out. The problem: none of them really expected what would happen when he encountered Gintoki

Part 2 - Gintoki, Shinpachi and Kagura encounter an old man and are "forced" to play games with him; meanwhile, Sa-chan's master passed away and she went to attend his funeral.