Lust Series

The Lust Spear is part of the Lust Series Curse Series claimed by Motoyasu somewhere around 『Chapter 165』 of the web novel. Motoyasu became extremely depressed after Elena, Witch, and Woman 1 abandoned him. Little is known of what he did during the intermission between the Spirit Turtle incident and when Naofumi found him but when he is found Firo attempts to cheer him up leading him to become mind broken. The Lust Spear IV is revealed in 『Chapter 209』 after Motoyasu fails to win a race against Naofumi when Firo is the prize. Its special effect, 「Temptation」, lends power to those overcome by lust.