Contains spoilers for this episode and earlier episodes.
The circulated pictures bring Ju-kyung's old humiliation into Saebom. Girls corner her in a bathroom and try to remove her makeup before Su-ho intervenes. Ju-kyung flees and avoids him, while Seo-jun tracks the leak back through Sae-mi to Su-jin. He confronts Su-jin and later pressures the student who posted the video to remove it. At home, Ju-kyung's mother discovers her beauty-course registration and demands a refund, unaware of what has happened at school. Joon-woo initially mistakes the absence for a reaction to his own relationship with Hee-kyung, then learns that the class has been sharing footage of Ju-kyung being bullied.
Joon-woo rebukes the students and shows the video to Hyun-sook, who finally sees the abuse her daughter has hidden. The family rallies around Ju-kyung, replacing arguments over makeup with concern for what she endured. Ju-kyung confronts Su-jin, but her former friend refuses to acknowledge the harm and tells her to run away again. At Prince Comics, Su-ho helps Ju-kyung laugh and lets her know that he has missed her. Encouragement from him and her family gives her room to decide how to return. She comes back to class wearing glasses and showing her bare face. When students question her relationship with Su-ho, she confirms it herself, and he joins her in the hallway.