Mei made a promise with Charlie that he would return her to her time on the next full moon, but she's starting to feel that she would rather stay in the Meiji Era with Ougai. Meanwhile, having started writing his next novel, Ougai has shut himself up in the study to focus. The story he writes is meant to be a love story, but his writing isn't progressing as he would like and Ougai's countenance is getting gloomier. Ougai's past is hidden within the story.
Just as you suddenly appeared before 
me on that night of the full moon,
Como la noche de luna llena
en que apareciste tan de repente.
Como la noche de luna llena
en la que apareciste de repente.
Così...
Como você apareceu repentinamente
naquela noite de lua cheia?
Так же... как неожиданно явилась
предо мной в ночь полнолуния.