Akumade Amai Watashi no Kanojo

Mai Amatsuka, a girl who loves sweets, is heartbroken after being dumped by her girlfriend. One day, she falls in love at first sight with Riri Kurosaki, a beautiful girl who has just arrived as a new waitress at the café she works at. However, Riri turns out to be a demon called a succubus? Mai shouldn't fall in love with her, but she can't forget her super sweet kiss! A cute and devilish girls' love comedy begins!

(Source: Kodansha, translated)

Included one-shot:
Volume 1: Tsukutte Agetai! Yomotsu Gohan