Labyrinth of Love and Heartache Episode 9

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.