Guai Hana no Shisa Oni Shi

About this title

Momone, a young girl who became a "half demon" after a major incident in the past, is worried about her future career path, but one day while she's having fun with her best friend, Rin-chan, she receives a request from a first-class demon exorcist from headquarters to defeat a certain demon...!? (Source: Kadokawa, translated)