Panty House.

Yeon-hee comes to Jin-woo with a smile and buys alcohol. Jin-woo Yeon-hee, who pretends to be bright, thinks it's strange, but it fits everything. When she finds out that Yeon-hee has broken up with her boyfriend, Dong-jun, her heart goes haywire. Yeon-hee, who is drunk with her, confuses Jin-woo with Dong-jun and kisses him, and Jin-woo is unable to push Yeon-hee, whom she liked in the past. Na-young knows that fact of her and confesses her own heart to her courage.