Not gonna lie, I'm getting really damn tired of these genderswap manga. They keep acting like suddenly heterosexual people can just decide to be not heterosexual anymore and that there's a super large amount of gays out there and that there are absolutely no problems at all with gays that set them apart from straights and it's just not true. While your sexuality is not entirely (or even mostly) genetic, by the time you enter puberty it's pretty much not changing, and the majority of homosexual men report to having been sexually abused by the time they end puberty (which is a current running theory about causes of homosexuality in men). Generous estimates put homosexuality at most at around 4% of the population, but that tends to be oversampling biases and in general it's closer to under a quarter of a percent. Lastly, homosexual men tend to have a large number of STDs due to much more promiscuous behavior and homosexual women have extremely high rates of domestic violence. It's super annoying to see people just pretend this doesn't happen.
Just in case you weren't aware, over 43% of homosexual men in the US admit to having slept with over 500 partners in their life. Over 28% admit to having slept with over 1000. It's no wonder AIDS and other STDs are so prevalent amongst their communities.