To pass Final Selection, one must survive for seven days on Mt. Fujikasane where demons captured by the Demon Slayers have been imprisoned. So begins the battle for survival between the young swordsmen and the demons. Armed with the breathing techniques and stances he'd learned from Sakonji Urokodaki, Tanjiro slashes demon after demon. His two years of training have not gone to waste. But just then, a morphed demon appears out of nowhere.

The deities of both planet Cray and planet Brandt descend in the final act. Fighting alongside his allies towards the conclusion of the distorted fate, the light of salvation appears within Aichi's sword.

To everyone’s surprise, Daisuke pitches a whole winning game despite only having practiced with the team for an hour. The Meisei team goes to the Tokyo Tournament, but Daisuke doesn’t show up until the game is well under way.

Kagura Soma visits and expresses her rather explosive love for Kyo. At first she regards Tohru as a potential rival, but she soon comes to realize that Tohru is interested in friendship, not fighting.

Reigen received a phone call at his office, the Spirits and Such Consultation Office. The client asked him to find out what the black shadow that kept destroying his fields actually was. Meanwhile, back at Salt Middle School, Kamuro announces that he's going to resign from the position of student council president. Elections to decide a new student council president are going to be held and Mezato convinces Mob to run as a candidate, but...

After their encounter with Pharsalia, the team abandons ship. Now it's up to their one-and-only leader to corral the crew and complete their mission.

Like Yamaneko found out, not all hot springs are equal. But that doesn't stop everyone else from taking a dip and creating problems of their own.