The bright moon shines on your heart, your heart is magnanimous!
This article is also known as: After fetal transfusion, the protagonist is running around in the melon field. It can also be called: Records of Min Yue's experiences. Or it can be called: solving crimes by observing. Can also be: witness to the case.
There should be no cp. If needed in the later stage, there will be it, but there is a high probability that it will not appear in the early stage.
Explanation: The protagonist is basically a bystander and participates in the case, but most of his participation is a "supporting role". I don't know if it's a cool novel, but probably, maybe, it's a strong female character.
Min Yue came from hard times, and her biggest wish was to live a slightly more comfortable life, but what happened one after another made her run up and down in the "melon field"...