
Quick answer — Ayami Tsukui voices Neia in Headhunted to Another World: From Salaryman to Big Four!, Pigimaru in Failure Frame: I Became the Strongest and Annihilated Everything with Low-Level Spells.
Ayami Tsukui voices Neia (Headhunted to Another World: From Salaryman to Big Four!), Pigimaru (Failure Frame: I Became the Strongest and Annihilated Everything with Low-Level Spells).
Neia is voiced in Japanese by Ayami Tsukui.