Koremitsu acts as Genji's personal attendant throughout the narrative. His role centers on executing practical tasks for Genji, particularly those tied to Genji's romantic endeavors. Koremitsu investigates potential interests and gathers information about women Genji pursues, functioning as a messenger to facilitate their communication. This involves carrying letters and arranging meetings for Genji. His responsibilities extend to managing the logistical aspects of Genji's affairs, serving as a practical counterpart to Genji's aristocratic lifestyle. Koremitsu's portrayal remains consistent as a supportive figure enabling Genji's activities, without elaboration on his background, personal history, motivations, or character development beyond this function.