As per wikitionary, a waifu is:

> A fictional female character from non-live-action visual media (typically an anime, manga, or video game) to whom one is romantically attracted and/or whom one considers their significant other.

I don't have a fictional character I consider my significant other, and that sounds pretty unhealthy.

I do have favorite characters and characters I find fappable, and of course I do fap to them, as that's the whole point of finding them fappable. And of course that includes fapping to guro scenarios with them, as that's the whole point of having a guro fetish. At least as long as it's happy/consensual/casual guro as per my variation of the guro fetish. Indeed, I would usually find it hard to fantasize about characters not on this list. I would still consume such content created by others, but to come up with scenarios with other characters myself I just don't care about them enough.

That being said, I'm trying to avoid creating guro with Alisa Seleznyova, as I want to avoid what happened with the Kagamine twins. Which is that I started with writing a non-guro story about them titled Innocence, but then I wrote a guro spin-off of it, then another one, and then it was a slippery slope into more and more guro, which was all good fun, but I also found myself pretty much unable to fantasize about them in non-guro scenarios. When I try to do so, my mind just slips into all the more exciting guro possibilities. So, as I said, I'm trying to avoid making guro with Alisa Seleznyova, but it's not because of some kind of guilt, it's just because I don't want to become unable to make non-guro content with her.