I've been working on my current story for way too long now. I've finished the first draft and second draft online. But while reading a particularly good book recently, I realized my characters are very flat. They had personality, but no history. No connections. No substance. They were just paper dolls acting out a role. So I started making back stories for them. And while it's working out great and I can't already feel my story growing, I'm worried it's too much. For example... Seren's parents were killed by a sickness taking over the world. Caius's father died in an accident and now helps take care of his aging mother. Verda is the eldest of four girls; her father ran out on them when her mother became sick, and now she's the sole provider for her family. Levon is the middle of seven children and part of the royal family. And Echo is an orphan, passed around through foster homes, with a twin brother she doesn't know about. Is that too much? Should I have more characters with happily in tact families, or (in my twisted story's case) more characters whose parents died by the sickness taking over the world? I just worry a reader will hear my characters back stories and think I added them strictly for drama. Though I guess that's a stupid thing to worry about... Thanks for reading.