Haruko-san to Sumire-chan

Sumire and Haruko, two doujin authors, go on a manuscript retreat on a deserted island!

However, as soon as they arrive, Haruko can't stop doing lewd things. Sumire can't resist the temptation.

Will Sumire be able to resist Haruko's temptations and finish her manuscript?

(Source: Pixiv, translated)