It could be really interesting. Fanfictions often explore different aspects of the original 'A Certain Scientific' universe. Maybe this one focuses on the familiars in a unique way, like giving them more backstories or different powers.
In this volume, the story focuses on the characters' efforts to solve a complex scientific mystery while dealing with powerful adversaries. There are also some unexpected plot twists that keep you on the edge of your seat.
I don't have the exact number off the top of my head. But usually, you can find this information on manga tracking platforms or from fans who closely follow the series.