You'll probably be disappointed, but we've already had this discussion sometime in the past few years. The short version is "no guro, this is a yukkuri site". The strange reasoning of why we don't allow guro? For some reason, a lot of people like yukkuri abyuse but not guro and differentiate quite harshly between the two.
Long version: If by "realistic" you mean organs and blood, we stay away from that altogether. The fine line between yukkuris and guro here is that "yukkuris are pastries", and once they venture beyond that it automatically becomes guro which we don't allow. There's many many other sites for that. (hell, even pixiv has a large guro population) You can even look at fluffies or jissou sites and they are pretty similar.
Yukkuris might be filled with nonsensical stuff but yukkuris, at the end of the day, are magical manjuus in most people's headcanon. Part of why we like them is because they're basically magic manjuus that heal with orange juice, have a fairly established fanon governing them and have no discernible organs. (but filled with delicious pastry fillings)
If you want to get away with it by saying "ok its a pastry filled with organs" so you can do disemboweling and other stuff, I'd rather that stuff stay on guro-related boards honestly. The most we'll allow is for it to be filled with cooked offals, but blood and gore is no-go.