I Forgot Everything, Except Loving You - Season 1 (47 episodes)

Separated for five years, two estranged former lovers unexpectedly reunite through a late-night phone call. Having parted ways with regret in the past, Lin Wantang meets Gu Shenbai again years later, only to discover that the once-brilliant youth has developed rare early-onset Alzheimer's disease. Time has softened past entanglements and illness erodes all his memories, yet she is the one love from his youth he cannot forget. In his fading days, his heart and gaze remain filled only with her. He forgot time and forgot their parting, yet he never forgot loving her.

I Forgot Everything, Except Loving You - Season 1 - Episode 1