In the fifth episode of the Demon Slayer: Kimetsu no Yaiba Mugen Train Arc , titled , the battle against the Lower One demon Enmu reaches its climax as the demon slayers attempt to protect the train's passengers. Key Plot Points
Kyojuro Rengoku finally wakes up and quickly takes command, ordering Tanjiro and Inosuke to find the demon's "neck" while he, Zenitsu, and Nezuko protect the passengers in different train cars.
The episode concludes with a "Taisho Era Secret" comedy skit. Kimetsu no Yaiba: Mugen Ressha-hen - Episode 5 discussion