As you can see from Terashima-Furuta's tweet that follows, it didn't take long for Adult Swim to give them the go-ahead:
The Rick & Morty season4 Blu-rayBox is out now! Also included "the Samurai and Shogun" which I directed, in a bonus feature.
first shown Rough design! https://t.co/Zx0oDOd0ik pic.twitter.com/0jaaHGJe6l
— kaichisato＠Samurai and Shogun (@kaichisato) September 26, 2020
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