it seems like a hystorical book , i'm sure i'm going to like it

my first impression is , this book is going to be a hystorical book , since it says set over sixty year of british history. at first , i thought that it mingth be boring but then i read about the main character being friend with someone that has a well connection and meeting someone underground , it just gave me attack on titan vibes , i'm not sure weather it'll be manjor plot twist or not , but i'm there'll be something good going on in this story