Haruka Hasegawa is a key character in the anime series Moyashimon. She is a graduate student at an agricultural university and works as an assistant in the university laboratory. Haruka is known for her striking appearance and stern demeanor, often wearing a lab coat over her revealing outfits. Despite her tough exterior, she is deeply knowledgeable about fermentation and microorganisms, playing a crucial role in guiding the protagonist, Tadayasu Sawaki, and his friends through their microbial adventures. Her character adds depth and complexity to the series, balancing humor with scientific exploration.