Crushology 101

Shy and awkward Bani enters college hoping to survive the chaos but ends up catching the eyes of three charming seniors. With every encounter her world turns upside down. Crushes chaos and college life begin now.

Bani is determined to pay back her debt and gets a part-time job to get the money. As luck would have it, she encounters a new man who shares her interest in art.

Bani questions her feelings as tension rises between Jay and her. Bani later confronts Jay about their relationship, while another classmate steps in, trying to protect her from getting hurt again.

The group faces a power outage and relocates to study together. Tensions rise as romantic feelings surface—Bani grows closer to Ji-won, sparking jealousy in Hee-jin. A BBQ mishap leads to chaos, but care and concern deepen bonds among the friends.

Bani and others discover that Han Yeo-reum once dated Hwang Jae-yeol, which catches Bani off guard. She brushes it off, but it leads to awkwardness. Meanwhile, Bani spends time with Jae-yeol, feeling embarrassed about her feelings. The episode delves into the distance growing between them and the evolving relationships.

After witnessing Jae-Yeol with his ex, Bani is taken aback when he suddenly kisses her. Feeling disillusioned, she questions his sincerity. Ji-Won, who secretly saw the moment, later confronts Jae-Yeol, urging him to be clear about his feelings and act with integrity.

At the university festival, a public confession hints at someone wanting to spend Christmas with Bani—prompting the host, So-Young, to call her and Ji-Won on stage. As Bani questions Ji-Won’s involvement, So-Young reveals she and Jae-Yeol never broke up.

Hee-jin and Jae-yeol make it official, while Ji-won quietly steps back. But when Hee-jin’s furious ex shows up and attacks her, Ji-won rushes to her rescue. As the police intervene, tensions rise — and Jae-yeol struggles with the fact that he wasn’t there.

Jealous after seeing Bani fall asleep on Ji-won's shoulder, Yeo-reom lashes frustration. As their misunderstandings grow, Bani is set to study abroad in the U.S. Though they briefly reconcile, their true feelings remain unspoken, and the distance between them deepens.

Bani returns from New York and resumes her studies, enrolling in the same class as Jae-yeol. Despite a year of no contact, tension remains between them. Meanwhile, Bani’s first love, Hyun-oh, reappears, and a photoshoot sparks a rivalry between him and Jae-yeol, complicating Bani’s emotions.

When Jae-yeol sees Bani with Hyun-oh, he impulsively pulls her aside to talk. Still unable to express their true feelings, the two remain distant. Shaken by Hyun-oh’s sudden confession, Bani rushes to help Jae-yeol when he loses his bag on a shooting day.