Condition: Purchased new from a bookstore. All volumes were read once with a cover. Stored in a dark place at home, no smoking, no pets. Product Information: "Kamo no Negi ni wa Doku ga Aru: Kamo Kyoju no Ningen Keizaigaku Kougi" (There's Poison in a Duck's Leek: Professor Kamo's Lectures on Human Economics) Shinobu Kaitani / Takeshi Natsuhara *Complete set of all published volumes (as of December 2025). #ShinobuKaitani #Shinobu_Kaitani #TakeshiNatsuhara #Takeshi_Natsuhara #Books #Comics/Comics #Shueisha #GrandJump #Kamorhythm #Kamonegi #BehavioralEconomics