Ponkotsu Keisatsukan wa Watashi ni Muchuu is a Manga/Manhwa/Manhua in english language, ROMANCE series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

Akiyama Momiji, 27 years old. One day, she was suddenly bothered by a drunkard who was then driven off once she broke out in her dialect. The policeman who witnessed this came to realise his fetish for dialects and became emotionally attached to her!? Now, Momiji has found herself in a bewildering but heart-throbbing situation thanks to this clumsy policeman's single-minded displays of love!