One Isn't Enough [A Bungou Stray Dogs ff]

I've found that there aren't many BSD smuts on Wattpad, and after searching for a long time, I found a book that promised smut and had none. So for all you poor sinners out there, who thirst for BSD character as much as I do, here's a smut fanfic of all your favorite characters. This is my first smut book, but don't worry I've read enough smut to make sure this is a good one. (U3U)

ALSO! I don't own any of these characters, the fanart or the anime. This is a fan fiction, made purely for everyone's entertainment.

The characters belong to Kafka Asagiri and Sango Harukawa.