Narumiya Torara devoted his absolute loyalty to the KB Group's third son, Ryuzaburo Kuroha, only to be met with a cruel betrayal. After discovering that his master secretly orchestrated his family's ruin, Tora was ruthlessly murdered for uncovering the truth. However, instead of dying, he awakens 22 years in the past... as a 10-year-old boy. Armed with knowledge of the future, Tora makes his move to rewrite his fate and protect his family. Deceived and murdered in his past life, he will now execute the ultimate revenge, by becoming the mastermind strategist for his sworn enemy's older brother!