Gintama': Futon ni Haitte kara Buki Nokoshi ni Kizuite Neru ni Nerenai Toki mo Aru - Apr 3, 2015

Bundled with limited edition of the 58th Gintama manga volume. The tagline for the bundled anime reads, "It's time for all the Yorozuya members ...to wake up just one more time." (Source: MAL News, edited)