The Taira clan spirits refer to the collective souls of the Taira (Heike) warrior clan, particularly those who perished at the Battle of Dan-no-ura in 1185, marking the clan's dramatic downfall. Japanese folk tradition and Buddhist memorial practice have long associated their restless spirits with tales of vengeful ghosts and eerie phenomena, such as the Heike crab legends, prompting rites intended to pacify and honor the dead. Memorial services and storytelling traditions, including recitations from the Heike Monogatari, have served for centuries as vehicles for remembering and appeasing these spirits.