The comprehensive nationwide rerun of the Demon Slayer: Kimetsu no Yaiba anime series has brought fresh attention to the Mugen Train arc, specifically with Episode 2, titled Deep Sleep. Fans tuning into the broadcast were greeted by a newly updated opening sequence featuring LiSA's soaring theme song Akeboshi, immediately drawing strong emotional reactions from the community across social platforms.
Produced by ufotable, the series adapts Koyoharu Gotouge's massive manga hit from Shueisha's Weekly Shonen Jump. The narrative follows Tanjiro Kamado as he joins the Demon Slayer Corps alongside Zenitsu Agatsuma and Inosuke Hashibira, boarding the ill-fated locomotive where the Flame Hashira, Kyojuro Rengoku, awaits. Rengoku's eccentric introduction and overwhelming swordsmanship—culminating in his execution of the Flame Breathing First Form: Unknowing Fire—remain standout visual setpieces of the franchise.
However, the narrative quickly shifts from high-octane swordsmanship to psychological peril as the Lower Rank One demon, Enmu, sets his trap. Utilizing sleeper agents bound to the demon slayers, Enmu plunges Tanjiro and his comrades into deep slumber, exploiting their deepest desires through agonizingly bittersweet dreams of lost family. The broadcast also highlighted guest voice performances from notable industry talent including Takuya Eguchi, Ayaka Senbongi, and Shogo Nakamura, enriching the emotional weight of the passengers trapped aboard the train.
