Viena

Viena is one of the two entities collectively referred to as the "Twin Demon Gods," alongside her counterpart Fiena. Despite her appearance as a young girl, her body is composed of a slime-like substance, and she wields extraordinary power. She emerges as a dungeon boss during the Centennial Festival, and in battle she is capable of merging with her sister to manifest as a divine being. Her presence caused a dramatic surge in the guild's workload, making her the prime target of Alina, who is determined to clock out on time.