平清盛は1181年2月に熱病（猩紅熱？）で亡くなり、後白河法皇は何とか自力で幽閉先から脱しました。 Kiyomori Taira had a fever (scarlet fever?) and died in February of 1181, and Goshirakara Dharma Emperor managed to break out the prison on his o…