<Korean TV Series NOW> ”Buried Heart” EP7, Park Hyung Sik regains his memory and risks his life for revenge = Viewership rating 10.9%, Synopsis and spoilers

*This article contains spoilers. SBS TV Series "Buried Heart" EP7 (viewer rating 10.9%) is about Dong-ju (Park Hyung Sik) who witnessed the death of his only sister.
However, the shock caused her to regain her memory and she began to fight back in earnest against the villain Jangsung (Heo Junho) who killed her sister. In front of Dong-ju at the funeral of her sister, Sister Agnes (Han Ji Hye),
Jansung then brazenly showed up. Jansung pretended to be sorry and comforted Dongju, but his real purpose was to see if Dongju had regained his memory in front of Jansung due to the shock.
Dong-ju pretended that he hadn't regained his memory in front of Jan-seon and carefully began his revenge.