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Joo-yeon and Kun stay at Kun's grandmother's house. Kun manages to stop Sae-yan's mother, who comes to take Sae-yan away.
The national tennis athlete training day has begun. Sae-yan, who is being chased by his family's men, runs away with Kun, Shin, and Joo-yeon.
Joo-yeon and Shin save Kun who fell into the water. Joo-yeon finds Kun's diary. Shin secretly burns Kun's emotional diary.