Invincible Teacher

After 50 years of being in the position of Hwacheon Clan Leader, Kang-hyuk, widely renowned as ''The Dragon'' retires.\n\nNearing his eight year of retirement, at the age of ninety-eight, he experiences the spiritual phenomenon of ''reverse-ageing'', causing his body to return to a state of youthfulness.\n\nWith his new found youth and vigour, he sets out to fulfill his deceased brother''s last wish to...