Kara no Kyoukai Movie: Mirai Fukuin

The two series' protagonists have identical personalities, physical abilities, special ability and similar appearance. There're some slight differences: 1/ Difference in eyes colors while activating their abilities. Shiki's eyes glows blue, while Canaan's turn red. 2/ Shiki uses katana and knives, while Canaan uses mostly gun 3/ They wear different styles of clothing. Shiki wears a combine of traditional and western while Canaan wear modern style only. 

Both villains are bombers where they challenge the MC; watching&calling him/her from distance. Both are Mystery movies. Although, Mirai Fukuin deals more with "Supernaturals" and MUST be viewed after its prequels to be fully understood. While Detective Conan is "Police" show and the movie doesn't associate that much with the parent story which can be viewed as a stand alone mysterious case movie. 

Dark characters... very serious. Not little kid's anime for sure :D 

Mature titles which have similar dark and deep atomosphere and feature protagonist who can see future in a form of visions-warnings. Both titles focus on protagonist's feelings towards this ability. Is it future so inevitable or you can change it if you know it?