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.
AnimePiracy is a site to watch online anime like Kimetsu Gakuen Monogatari: Kimetsu no Utage Tokubetsu-hen SUB online GoGoAnime, or you can even watch Kimetsu Gakuen Monogatari: Kimetsu no Utage Tokubetsu-hen in HD quality just like KissAnime and 9Anime.