21 century retrogressionNew21st Century Retrogression; 21세기 반로환동전

Ha Pung Gae, the elderly Taoist monk who has lived since the end of the Joseon Dynasty, achieves an unexpected breakthrough in the counter-retrogression movement. Despite this success, he is left with only approximately ten years in his remaining lifespan. To evade death, he must now embark on a journey to attain immortality!