My stories tend to be mostly adult/cub or cub/cub sex with minimal plot (not ideal, but meh is how I write). I tend to be big into humiliation and reluctance (sometimes flat out rape sometimes a bit less black and white).
My stories will tend to feature cubs forced to do sexual things or put in a situation where they are consenting, but only due to massive manipulation.
Almost all gay though there are some things I might include girl cubs for.
Almost all my stories will involve diapers and humiliation of one sort or another.
Other things I like include toys. I might also get into some more extreme topics so just mind the keywords and make sure there isn't anything you really don't want to see.
In general I am not into pain though... Cubs might be in great discomfort, but even if it isn't very realistic I will tend to downplay any pain that doing things IRL would result in.