
Yeah. Hell, even those of us that are females that have NOT had anal, it should be common sense. Unless those same authors have also never suffered constipation, diarrhea, a colonoscopy or an anal ultrasound (yes that is a thing. I had to have one when I was having the issues that led to my hysterectomy so they could see the outside of the uterus more clearly), or even had a decent-sized dump. If they had experienced ANY of those things, they should KNOW it is NOT a place that accepts large things going through it with ease.

yeah. this is why a good manga is sometimes ruined with complete ignorance on the author's side about the actual process. I haven't tried anal but I kept wondering what they all mean by 'soaking wet' when the guys did anal. Basically because a female is not much different from a male in this respect and the only thing which comes out of anyone's ass is not a 'natural lube'... and this is when a romantic manga has to get a comedy tag... :)

There was another one that I think started out as a straight couple and at the last min changed to Yaoi because it had first time in the shower and "There is blood, that only happens if you are a virgin. So you weren't lying." Um, no. blood and anal has nothing to do with being a virgin and if it doesn't stop, maybe just maybe you should get the poor guy to the hospital
This reminds me of the first time I did anal it was so painful I kicked my partner clear off the bed so I know his pain.