This sequel centers on the "second couple" from the first book, to "Broken Alpha," but with a much more intense focus on the (rather different) kink. This fetishistic play won't be everyone's cup of tea, but for those interested in age-play, feeding, and Daddy-infantilism, it is a simple but kinkily steamy story.
I read a couple of brief descriptions that indicated this book centered on Daddy-play, but the kink explored is not at all what I normally think of as a typical gay "Daddy" relationship. For me, a typical gay "Daddy" is usually more simply just a clear top and/or the in-charge, mature partner of a more laid back/carefree/submissive man (who might sometimes just want to be a bit of a less mature adult and a bit of a "boy"). This story has a submissive who has a need to feel much more helpless and who revels in rather infantile behavior and dependence.
For those who have not read much age-play or infantilism smut, this actually might be a relatively gentle and non-threatening introduction to that particular fetish. Compared to the wide range of extremely kinky erotica on this topic, this story isn't so over-the-top but takes the reader somewhat slowly (and not too hard or far) into the roleplay. It provides a glimpse of a Dominant who discovers his partner's interests and fetishistic needs, and pursues those kinks in a slow, deliberate, and respectful manner.
While this particular kink is not common in male/male romance, the author takes readers slowly and not too far into this fetish not too different than how this genre typically deals with other kinks. In other words, if someone is curious, this is a nice, soft introduction for readers of m/m romance to age-regression, infantilism, and feeding play.