Wrath Series (Web Novel)

The Wrath Shield is first claimed in chapter 22 of the web novel after losing a duel to Kitamura Motoyasu partially due to the unfair assistance from Malty Melromarc. It is unlocked after seething rage from the very depths of the body envelops Naofumi and the requirements to unlock the Curse Series are met. It's name is varied but is commonly called the Wrath Shield. Other names include the Shield of Fury, Mortar Shield, and Killer Shield.

I totally missed when it became Wrath Shield Ⅱ so here's a chart with only the name changed. Other things may have changed, but I don't remember when it happened. Maybe when he was fighting the dragon???

Vagely remeber this... Somewhere around the pope thing.

In chapter 116 of the web novel takes the time to strengthening Wrath Shield Ⅲ. He discovers that this shield cannot perform item, spirit and status enchantments however it's abilities still improved tremendously.