Fragile

Ji-yu feels so small and tries to find peace through her boyfriend; she fails to find friends after the semester begins, but A-ra, the transferring student, approaches Ji-yu; Ji-yu starts having doubts about Chan-seong.

As Ji-yu is in agony, the person who understands her is San, who is always by her side; due to an incident with Do-ha, an older student, Ji-yu experiences an unexpected event; she feels better as Chan-seong is sweet to her but not completely.

Ji-yu starts spending time with her new friends; her relationship with Chan-seong gradually suffers; at the same time, the two suppress their frustrations over unresolved issues; Ji-yu meets up with Do-ha who keeps advancing to her.

After talking to San, Ji-yu wants to be honest with Chan-seong, but it doesn't go her way; the more she tries to explain, the more Chan-seong misunderstands; in the end, Ji-yu is fed up and the two turn their backs against each other.

Ji-yu meets with Chan-seong to have a talk and clear up a misunderstanding; she experiences an unexpected conflict with Mi-na later on; Ji-yu, who becomes the subject of a rumor once again, tries to resolve the situation.

After clearing things up with Mi-na, Ji-yu and her friends visit the gynecologist; Ji-yu goes to find Do-ha to rectify things; Chan-seong goes to meet Ji-yu after hearing about the rumors; Ji-yu hears surprising news from San.