Oh yea I should probably do that too

1. I have no preference on an age range, I'll work with whatever is decided.

2. Personally, I prefer narrative based combat more than other formats. Though I'm not against a dice system, as long as it's not a roll for every little thing kind of thing.

3. I think something serious is the most preferable for something like this. 

4. o7

And to prove I read the rules, I think one of my favorite character would probably be Ryougi Shiki from Garden of Sinners.