Kinkage step-brothers au

This is an au where Kageyama's mother and Kindaichi's Father got together in Kageyama and Kindaichi's first year of high school, with this Kageyama and Kindaichi need to work on their friendship since they be living in the same house from now on.
I'm sorry if I get any grammatical error English is not my first lenguage and you are totally free to correct me if you see any mistakes.