Gintama' - episode 31 - 30 Oct, 2011

Overall episode number: 232 Elizabeth vanishes, leaving behind a sign that says "Don't look." Katsura asks Odd Jobs to help look for him, but then he remembers that it's been a year since he last saw Elizabeth. He never even realized that Elizabeth had left home! They decide to go to Katsura's home to search for clues. (Source: Crunchyroll)