Haruki is the pen name of an established erotic mangaka in Japan whose popular works include Ero Ninja Scrolls, Cat in a Hot Girls' Dorm, Sense and its spinoffs, and Koroshiya-san, the 4-koma manga about Japan’s top assassin.
Progresses the story slightly and we are hopefully past the Pero & Caligurouis/black ship pirates arc and get a greater variety of villains and hero ninja. Continues that sex is the weapon of choice in this universe, even though the art on the cover and chapter title pages shows Arakusa with swords and other various armor/swords. I am still hoping for some action based combat because I get bored of just seeing Arakusa in losing positions every single time. Minauchi Hiraka is an interesting character to introduce that has some actual strength or an upper hand in “battle”. Hopefully we see Arakusa gain some abilities and strengthen her character.
Arakusa maintains a lack of a character arc throughout and hasn't become any better of a ninja at all. The story really isn't worth getting into since there barely is one, but the art is sharp throughout. Just kind of wish this volume wasn't so heavy on the tentacle stuff.