When a long-missing heir returns with lost memories, love and suspicion entwine. Is he truly Hongrang, or a stranger disturbing hearts and family ties?

Brilliant brain scientist Sewon suffers a horrific personal tragedy. Desperate to uncover what happened to his family, he conducts "brain syncs" with the dead to access their memories for clues.

Through the course of their lives, a man and his first love are repeatedly separated from each other because of circumstances out of their control.

On a live music radio show, a letter arrives from the 23 years in the past. Through the letter, the first love and friendships of five friends are revealed.

In 2025, a scientist on the verge of making a major discovery related to time travel is suddenly put in peril when a rival kidnaps her young son and demands a hefty ransom: her entire research.

A former medalist who is now a troublemaker physical educations teacher and a natural born rebel take a satisfying whack at life.

On a live music radio show, a letter arrives from the 23 years in the past. Through the letter, the first love and friendships of five friends are revealed.

Through the course of their lives, a man and his first love are repeatedly separated from each other because of circumstances out of their control.

Brilliant brain scientist Sewon suffers a horrific personal tragedy. Desperate to uncover what happened to his family, he conducts "brain syncs" with the dead to access their memories for clues.

In 2025, a scientist on the verge of making a major discovery related to time travel is suddenly put in peril when a rival kidnaps her young son and demands a hefty ransom: her entire research.

When a long-missing heir returns with lost memories, love and suspicion entwine. Is he truly Hongrang, or a stranger disturbing hearts and family ties?

A former medalist who is now a troublemaker physical educations teacher and a natural born rebel take a satisfying whack at life.