 If you liked
Durarara!!
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 ...then you might like
Yojouhan Shinwa Taikei
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Both have a focus on character connections. In each story there is just a touch of the supernatural, but not a ton. The emphasis on character's relationships over other things is the main commonality.
Izaya and Ozu have similar views on humans, and like to show their love! Also, the {Mikado, Anri, Masaomi} and {Watashi, Akashi, Ozu} groups are similar: a girl and two guys who seem to be her only possible love interests, and Watashi & Mikado are very similar in personality (Ozu & Masaomi smile more).