Konkatsu Deka (2015)

Original title: 婚活刑事

35-year-old Hanada Yoneko is a detective of Ryogoku Police Precinct who is looking for a marriage partner. She swings between love and justice as she pursues cases with her partner, Fujioka Tsutsuji. Yoneko will not turn a blind eye to crime. In addition, she wants to be happy. But for some reason, all the handsome men she likes turn out to be criminals.