Here's a little dictionary with more info about the caption themes.
FAP-19: An acronym for feminizing age progression, FAP-19 is a contagious virus that targets young adult men and triggers rapid female puberty over the span of a week or two. Some subjects also exhibit an aging of their tissues that can be subtle or severe. On average, the side effects of the virus disappear after a hundred days, leaving the subject with no permanent changes. The H.1.29 variant, however, also introduces mental effects that alter sexual orientation and strong desires toward traditional female roles. Young men infected with H.1.29 often yearn for marriage and motherhood, although the latter is impossible due to their infertility. (discontinued)
Gender Swap Investigators: Paranormal activity is all around us, and supernatural forces are causing people to change sex. These are case files documenting instances of anything from ghosts to magic, with an objective, scientific tone. Beware: there are rarely happy endings.
Great Shift: An incident where random people all over the world change bodies, with permanent results. Originated by TG writer Morpheus.
Housewives: In an alternate universe very similar to our own (or perhaps a not so distant future), young men who are faced with the financial burden of a college education or a lack of job opportunities elect to become women as a career choice. They invest in their female selves so they can marry rich men and live rich lives themselves.
Mom Corps: In response to dwindling birth rates, the US government is recruiting able-bodied young men into motherhood roles with better incentives than the military. These future moms are given the highest quality womb transplants, hormone treatments, and feminine training as they enter lifelong service. Ideal candidates are jocks, whose tall, sturdy physiques are ideal for enduring multiple pregnancies. Most keep using their birth names and male pronouns early on, but they are willing to act and appear feminine in the name of patriotism.
Mommy Makeover: Mommy Makeover is a series of surgical procedures given to young guys who want to follow the path toward marrying a man and rearing children. Many elect to have voluptuous bodies, with the fat and flab that come with being a mature woman.
Second Puberty: Second puberty is exactly like it sounds: another puberty. However, it's female puberty, and it can happen to young adult men. In my version, second puberty is a risk to guys in college (typically freshmen), whose exposure to a predominantly male environment (the dormitories) may trigger a dormant genetic condition that causes them to spontaneously change sex. Millennia ago, this would've been useful for communities without fertile females. Nowadays it's no longer an evolutionary advantage. But young men still have to deal with becoming fertile and female in the worst possible place: a college teeming with horny guys.
Venus Phenomenon: A cosmic anomaly related to the position of Venus relative to Earth, the Venus Phenomenon causes young men to gain the physical likeness of the adult woman in closest proximity to them. This can be a family member or a complete stranger. Those affected are stuck for 584 days, not only dealing with having a body that is not their own but also synchronicity. Synchronicity between the young male and the parent female may include the woman's thoughts, memories, and desires being echoed in her new virtual twin's mind. Other physical traits, like the woman's clothing and jewelry, may also appear on the synced male's body. The subject is constantly in conflict with the woman's personality, and he may adopt some of her habits unconsciously. The chances of the Venus Phenomenon targeting a young adult male are about 1 in 500 for each cycle.