Heart-pounding Planet

Jieum hears the news that Seungjo—whom she has held a one-sided crush on for a long time since high school—now has a girlfriend.

Desperate to pour her heartbroken feelings out somewhere, she stumbles upon a chatting app called and meets "Jemulpo Puppy," spending a brief moment of escape with him.

Then, winter break passes, and she returns to school after a long break.

"W-wait a second. Why is he here?!"

There, she comes face-to-face with "Jemulpo Puppy," whom she thought she would never see again...?

"Found you, Pebble."