My Wife Cried and Handed over the Suicide Note. I Took a Look at It: You Killed Me.

Criminal Investigation and Case Solving, Unit Drama, Not the Kind Where a Major Case Runs Through the Whole Story!

One case after another, not one big case that runs through the whole story. The heroine has no cp! Don't just solve the case if the protagonist must have a sad past or psychological shadow or something like that!