The first set of shorts aired around June 2013 as a promotion for the second Gintama film.

These facts are typically bizarre or slightly gross, mirroring the dark and irreverent humor of the main Gintama series while subverting the "cute" aesthetic of the Mameshiba brand. Quick Series Context

In of the first collaboration series (2013), the Shinsengumi characters take center stage in their bean-dog forms:

Like all Mameshiba shorts, the episode follows a standard formula where one character (often a bean version of a Gintama lead) interrupts a moment to share a "trivial fact".

The original voice actors from the anime—including Kazuya Nakai (Hijikata), Kenichi Suzumura (Okita), and Susumu Chiba (Kondo)—reprise their roles for these bean forms.

A second collaboration titled Gintama: The Final x Mameshiba was released in 2020 to promote the series' concluding film. Anime: Gintama x Mameshiba - AniDB

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