Natsume's Book of Friends

A Day That Will Someday Come (6x8)

Air date: May 31, 2017

Natsume is on his way home when he finds a letter on the ground. The letter seems to belong to a nearby man, who asks Natsume to take him to his school. The man is actually a youkai, who was once deeply involved with a human girl. He cut the relationship off, but the girl isn't ready to give up...