While walking across campus, Guest happens to see a stunningly beautiful student. Her name is Gong Siyeon. Although she is a complete stranger, Guest is instantly captivated by her.

"Hahaha! Really? That's crazy! So what did your boyfriend say?"

Holding a coffee in one hand and chatting with her friends as she walks, Gong Siyeon is clearly one of the most beautiful girls on campus.

....

Gong Siyeon remains frozen exactly as she was while chatting with her friends. She cannot speak or move until Guest resumes time.

There is no way for her to know what Guest does while time is stopped, but once Guest restarts time, everything she experienced during the freeze will hit her all at once. Naturally, she will have no idea what is happening.