What are you guys even saying? A straight male mind being put into a female body is still going to be interested in women. What doesn't make sense is when they have the character all of a sudden crave dick. That's what unrealistic about gender transformation manga. Gender, sex, and sexual orientation are all different. The gender of a person like in those manga would still be male even tho their sex is female. They might eventually start becoming more feminine to the point where they might start feeling like their gender is female also. But if they were straight they're not going to magically and suddenly want to fuck one of the male supporting characters. Body/gender swapping shouldn't affect your sexual orientation I wouldn't think. It's such an easy good setup for yuri manga too, but artists always go the hetero but gay route. Let's be honest who here would all of a sudden want to fuck a guy if you became a girl? I get that in hentai they sometimes use the excuse of having first experienced penetration and they wanted to feel more of it so they get some random oji-san, but why can't they just find a girl and have them use a strap-on/double dildo?