(Mirror transfer, and Danzo CP, the author's sudden imagination, there is no logic, try to round it up, please leave on your own if you are offended)
In Danzo's eyes, Kagami is the most beautiful girl, especially compared to her original family, she is gentle and bright.
As a mirror of Uchiha, she is so beautiful that even Tobirama, who hates Uchiha the most, praises her and teaches her carefully. Anyone who is with the mirror will be infected by her gentle sunshine, and no one will hate such a mirror.
Danzo liked Kagami the most, and Kagami also liked Danzo. Unfortunately, the bright "mirror" was always fragile. Kagami died, where Danzo couldn't see it, taking away all the light and kindness of that man...
Danzo, who used anger and excuses to paralyze himself, finally became mercury behind the mirror. He could recall the light but was no longer qualified to touch it...
Purpose: Don't be lost in hatred