Tanjiro bought a bottle of "Demon Cleanse Spray."
It accidentally turned Zenitsu into a motivational speaker.
"I AM THE STORM THAT IS APPROACHING!" Zenitsu bellowed from the ceiling.
Meanwhile, Vahn's fragment in the Meta Realm had a shocking realization: the store was a lock, and his consciousness was the key.
To open what?
No idea yet.
But Denji handed him a burrito and said, "If we don't save the store, you'll never sell me Chainsaw Lube again."
Motivation = restored.