Urahara Appears! Stop Aizen!

 is the three hundredth episode of the Bleach anime.

Shinigami Illustrated Picture Book
Shunsui Kyōraku and Jūshirō Ukitake find an old photo album with pictures from the Turn Back The Pendulum period and their days in the academy. In all this time, as they discover, The Captain Commander has retained his appearance as an elderly man. They find that they cannot recall a time when he did not look this way.