Some of the characters get together and talk about "regrets" they have after 4 years of anime Gintama. Soon they fight over who gets more screen time. Special animation shown at the Gintama Haru Matsuri 2010 live event.

Collaboration anime between Gintama and Monster Strike.

Episode 15 of Drifters shipped with the special version of the manga's sixth volume.

Bundled with the fifth manga volume.