Ji-Hyun Park

Ji-Hyun Park plays an important role in all the events that occur through the manhwa. He is first seen in Ch. 03 watching Onyu and Yuna. Later it is revealed that he was the one who saved Yuna and Jun-Hoo at the park during Rin's murder rampage. His presence during this time was possibly a coincidence that led him to be intertwined with Onyu and Yuna's fate later on. It is unclear how and why he got involved with Onyu's attempts to save Yuna.

When Parrot and Woodpecker had recently graduated high school, along with Rin, Ji-Hyun was murdered at the request of Bustard. It is unclear and never truly explained why Bustard wanted Ji-Hyun dead. A possible explanation is that Bustard knew about Ji-Hyun's influence in Yuna and Onyu's lives, and because Bustard had an obssession with Yuna, wanted to remove him and keep her to himself regardless of the consequences and never realizing what he was doing wrong in preventing Yuna's death. Despite being dead, however, Ji-Hyun must have a similar time ability as other member in the manhwa do. He watches over Onyu's life several times and sees the cycle of sadness and Yuna's death repeat. Onyu as a child, who was the first to go back in time, couldn't accept Yuna's death and repeat the same mistakes without realizing. Somehow, Onyu as a young adult, also went back in time; this is the Onyu we see together with Yuna throughout the series.