Nana & Kaoru Volume 5

Written by: Ryuta Amazume

First line: "Zero points"? What" What does he mean?

Why you should read this book: Forced to confront their emotions by a crotchety old leather master, Nana and Kaoru both acknowledge their bond and the symbolic nature of a collar to keep them tied together, after which Kaoru makes Nana a bespoke collar, with love, leading to a fun, full-circle encounter in the field where he first took her after her first collaring. There's a fun sequence where Tachi and Mitsuko top Kaoru in the basement of the bondage shop (deepening his relationship with Nana), after which we get a very different story about a couple in their twenties, toying with BDSM to save their relationship, who are both advised with great perspicacity by the now wise in the ways of kink teenagers Kaoru and Nana. But the book ends with the main characters once again being forced to confront the fact that they have only a year of high school left, and there are no guarantees in life, because loved ones can disappear in an instant. 

Why you shouldn't read this book: This one actually has sex in it, but, due to Japanese censorship laws, the male genitals are drawn as magic markers.

Nana & Karou Volume 4

Written by: Ryuta Amazume

First line: What am I doing?

Why you should read this book: As the end of their junior year approaches, Nana and Kaoru continue having increasingly intense BDSM sessions while revealing to themselves the depths of their feelings for one another. Kaoru tries to improve his grades so Nana won't leave him behind at college, while giving her everything she needs to finish out her high school career strong, weathering her own tribulations and never letting anyone down. For her part, Nana begins to worry about a life without Kaoru, and begins to think more carefully about his needs and happiness.

Why you shouldn't read this book: This is a softcore BDSM manga that contains, among other things, three entire chapters of teenage perverts scouring the internet to find an obscure pegging video from the '90s for a dude they don't even like as a person, in the name of helping him regain his pride. If this is distasteful or nonsensical to you, likely you should not get anywhere near this book.