Unaired episode 12 included with volume 4 of the BD/DVD release.

These specials were originally shown at the Kimetsu no Utage live event which was held on October 20th 2019 in Tokyo. The cast members present at the event did a live dubbing of the characters. A version with a newly recorded dub was later featured on the DVD & Blu-ray releases containing a recording of the event which came out on August 26th 2020.

The show follows Gorou, a 24-year-old man who dreams of becoming the greatest Condom Battler. His go-to weapon is a 0.01 mm condom which he loads into an arm dispenser, and it opens to reveal a red rubbery armor that Gorou wears in battle. It also gives the hero the ability to summon sperm and created an attack out of the sticky substance. There are other characters in the anime like Miku and Hayato who duel using their own condoms. The anime is filled with absurd dialogue and fights, but these heroes always make sure to teach a sex education lesson along the way. (Source: Comicbook.com)

Due to the advent of modern technology, kids have abandoned their crayons and paper for electronic tablets, causing the imaginative energy emitted from children's doodles to reach an all-time low. Consequently, the Rakuga Kingdom in the sky, powered by such energy, is now at risk of collapsing onto the cities below. For any hope to avoid such a catastrophe, the kingdom's princess hastily seeks out a hero from Earth capable of wielding the Miracle Crayon. While the kingdom's reformers arrive on land to seize Earth, the magical crayon finds itself in the hands of Shinnosuke Shin-chan Nohara. In a journey that will test the limits of childlike imagination, Shin-chan must harness his creativity to secure the safety of his home and restore peace to both worlds.