Pairing: Kakashi x IrukaThe Sagishi series is only loosely connected, with the books often only held together by the fact that the title contains the word "Sagishi" (Swindler). You could say there is a continuing theme running through the books, something vague like 'the progression of Kakashi and Iruka's relationship,' but that could have been accomplished without making it a 'series' by linking the books through their titles. Books can be read in order or you can skip around amongst them with no fear of missing an important plot-point that went before or having a book end with a big cliffhanger. These are essentially stand-alone books. (On the other hand, why *not* read them in the order they were published? You might as well.)Book 1 - Suteki na Sagishi (Cool Swindler)Book 2 - Furachi na Sagishi (Playful Swindler)Book 3 - Tsuyoki na Sagishi (Strong Swindler)Book 4 - Bukiyou na Sagishi (Clumsy Swindler)Book 5 - Jouzetsu na Sagishi (Garrulous Swindler)Book 6 - Itazura na Sagishi (Joking Swindler)Book 7 - Himitsu no Sagishi (Secret Swindler)Book 8 - Yuuwaku no Sagishi (Seductive Swindler)