These specials were to help promote the currently in theaters Demon Slayer -Kimetsu no Yaiba- The Movie: Mugen Train.
Demon Slayer was re-aired on TV across Japan, including Fuji TV in the east and Kansai TV in the west, and recorded incredibly high viewership for 8 weeks in both areas.
During the Kansai TV 3rd quarterly earnings call on January 26, the president of the TV station reported that Demon Slayer: Kimetsu no Yaiba helped sell more sponsorships during rebroadcasts in late October onwards, bringing the company back from a loss to a profit.