I love it! Don't worry about the gore being too strong, it might be for some but others love it. Maybe you could vary it a little in your future stories.

The pacing and plot are excellent, there's already plenty of stories here with no plot and boring snuff, this story feels new and fresh. I don't feel I have to wait too long for the action either, in general I pretty much want to get straight to it. The scenario and the dynamic between Bob and Emma is interesting. Your writing is excellent, I've not noticed any big mistakes. I enjoyed this story, and I hope you want to write more!

Hope this provides you with some feedback. Gurochan can be quiet, but remember that there's always a lot more people reading than there are people commenting.

I would love to request a character, as long as that character also interests you:

Miyu
13 years old
Half japanese/caucasian
Black hair, pearly white skin
Small budding breasts, pubic hair just starting to form a small patch above her pussy
She has just discovered masturbation and despite her shy appearance she is constantly horny, and would appreciate dying in a manner that would give her some pleasure. I'm guessing Bob wouldn't mind taking her virginity either…
(Not based on a real person, this is only fantasy etc.)