Most of these notes are for ableism. Other than that, there are discussions of sexual and physical violence and murders that happened in the past to various characters, plus a suicide attempt and a murder attempt. Brief mentions of drug addiction and also homophobia as the psychiatrist deals with a concern about one of his children being queer, which he later gets over. The psychiatrist is explicitly stated to neglect his children and not necessarily be the best dad OR therapist.
Again, this is a book written from the perspective of a psychiatrist at a mental hospital, and the whole book is based around forcibly institutionalizing a man who is harmless and not in distress by being an alien--it's kinda the book version of that jerk on the Internet saying that otherkin need to be institutionalized. At times, other doctors in the book immediately jump to suggesting surgery and drugs for this guy. (Later, prot says he's hanging around of his own free will, and it appears he can indeed escape at any time, but still!)
There is another multiple in the book, but a minor character. She stops switching and becomes "just her real self" at the end, which is treated as for the best; prot and Robert do not, though prot leaves (for a few years--obviously he comes back in the second book). The fictional psychiatrist treats both systems under the real person/secondary personality dichotomy, though I think it's pretty clear he's supposed to be an unreliable narrator.
Also, this book has weird Christian themes. Prot is a messiah figure who comes from the heavens, from a place where everyone lives in joyful harmony and never suffers, and he takes a deserving human back with him. Later books in this series, as I recall, amplify this aspect. It's like a Rapture, just with aliens/headmates rather than angels. So that might be weird to read.
Content Warnings
Again, this is a book written from the perspective of a psychiatrist at a mental hospital, and the whole book is based around forcibly institutionalizing a man who is harmless and not in distress by being an alien--it's kinda the book version of that jerk on the Internet saying that otherkin need to be institutionalized. At times, other doctors in the book immediately jump to suggesting surgery and drugs for this guy. (Later, prot says he's hanging around of his own free will, and it appears he can indeed escape at any time, but still!)
There is another multiple in the book, but a minor character. She stops switching and becomes "just her real self" at the end, which is treated as for the best; prot and Robert do not, though prot leaves (for a few years--obviously he comes back in the second book). The fictional psychiatrist treats both systems under the real person/secondary personality dichotomy, though I think it's pretty clear he's supposed to be an unreliable narrator.
Also, this book has weird Christian themes. Prot is a messiah figure who comes from the heavens, from a place where everyone lives in joyful harmony and never suffers, and he takes a deserving human back with him. Later books in this series, as I recall, amplify this aspect. It's like a Rapture, just with aliens/headmates rather than angels. So that might be weird to read.