Detective Conan: When the Sun Sets, My Tactics Outshine the Dark

Looking for Detective Conan Fanfiction With Multiple Female Leads and No Canon Couples

I read a Detective Conan fanfic before, but I forgot the title. It had multiple female leads and broke up the canon pairings. The protagonist’s codename in the Black Organization was Dukang. I still remember some of the women he got together with: Ran, Ai, Yukiko Kudo, and Eri Kisaki.