Gintama - Season 5 Episode 14 Odds or Even

Kagura's older brother, Kamui, visits Kada's cell where she is being kept after having been captured by the Kiheitai and loses at a game of odds or evens. He is approached by one of the 12 captains who tells him he has the 12 captains support if he chooses to overthrow Admiral Abo. Kamui orders his second to kill the members of the Kiheitai, isolating Takasugi so Kamui can duel him. As the Kiheitai's ship is about to be attacked the Admiral double crosses Kamui and imprisons him out of fear. Takasugi visits Kada's cell and loses at a game of odds or evens. After a brief conversation Takasugi rescues Kamui at his execution, overthrowing Admiral Abo. Kamui becomes Admiral and the episode ends with Takasugi visiting Kada's cell one last time to lose at a game of odds or evens.