Kara no Kyoukai 2: Satsujin Kousatsu (Zen), Denpa-teki na Kanojo Recommendations
kara no kyokai and denpa teki na kanojo are actually 2 different 10/10 anime that are... perfect. they are both completely different stories yet their essences are also completely similar. In other words watching one and then the other will not be like watching the same thing but as if you are watching its ova.. kinda
Ryougi Shiki Love and Ame have a unique personality.
other similar aspects, which are both animes the protagonist is a boy and a mysterious girl.
In both there is a serial killer loose in town. Both feature a mysterious girl that acts very suspicious and a male protagonist being intrigued by said girl and trying to solve the mystery.
Interplay between Main Characters and Love Interests is similar. Both have Neo-Noir themes.