Kusuriya no Hitorigoto (Japanese: 薬屋のひとりごと, "The Pharmacist's Monologue") is a Japanese light novel series written by Natsu Hyūga and illustrated by Touko Shino. It was serialized online since 2011 on the user-generated novel publishing website Shōsetsuka ni Narō. In the following year, it was acquired by Shufunotomo, who initially published the series as a novel with a single volume in 2012 and then in 2014 began to publish it yet again, this time as a light novel. It has received two manga adaptations in 2017, with one published by Square Enix in Monthly Big Gangan, and another one published by Shogakukan in Monthly Sunday Gene-X.