A lot has happened since Not Fade Away; Buffy has been married and widowed. Angel, Gunn and Ilyria own a new corporation,
and Connor's all grown up. When Apocalypse strikes Japan, they'll all have to work together to save the world... again...
I'm aware that my Japanese is atrocious (I haven't even been taking it for a year and I don't study nearly
enough), but I think the title means "letter." If I'm wrong, let me know and I'll fix it.