Hoegwihan Yongbyeongeun Da Gyehoegi Itda

A warrior known as the Mercenary King dies in battle while seeking revenge for his family's destruction. At the moment of his death, he discovers that the noble responsible for his family's ruin had allies. He then awakens in his teenage body and must rebuild his strength and reputation to prevent his family's downfall. Many of his soldiers and knights have left due to the difficult conditions they face. He must now work to reclaim his former power and change the course of his fate.