JUNIOR HIGH AND HIGH SCHOOL!! KIMETSU ACADEMY STORY: KIMETSU NO UTAGE SPECIAL EDITION

These specials were originally shown at the Kimetsu no Utage live event which was held on October 20th 2019 in Tokyo with the voice actors live-dubbing their dialogue. Later properly dubbed and released on the Kimetsu no Yaiba DVD & Blu-ray. Note: Related to the post-credit shorts after episodes 14, 17 on the TV broadcast of Kimetsu no Yaiba. — Description from AniList community (anilist.co).