The history and all routes was great (only Sachiro route was really boring at first for me). But even if I enjoyed it i have small minuses and comments about it.

First, at the start, the main character is bored of her life, but at some point she decides to throw everything away and investigate with police. She doesn't even think that her actions may be bad. Even her partners says not to interfere but she does it anyway

Second, I think it would be cool if other partners would appear on other routes. For example, Sachiro on Zeikun's route when they are in the park or something.

Third (and this is for joke), why when something happends MC uses her umbrella as a weapon?! XD No matter what the weather is she always uses it