Welcome to Venus Vanguard. We've been expecting you. Sumire Takahana is a seemingly normal school girl cursed with the ability to see malevolent ghosts known as "Viruses." Her life hits a crossroads after a run-in with Lucia, a "gothic lolita" clad monster killer for hire. Not content to stay on the sidelines while these Viruses prey on the weak, Sumire decides to join forces with the mysterious, eyepatch-wearing Lucia to hunt down the Viruses before they can hurt anyone else. Venus Versus Virus Vol. 4 As Venus Vangard squares off against Sonoka's evil minions, Sumire's berserker powers spiral out of control...and it's Lucia who's caught in the middle!