XO, Kitty

Kitty hopes to honor her late mother's legacy and impress her long-distance boyfriend by enrolling in a prestigious school in Seoul.

Kitty, still adjusting to the time difference, is eager to reunite with Dae, but their meeting is complicated by dorm rules and the unintended consequences of a widely shared video.

Dae struggles with mixed emotions after an unexpected change in plans, while Kitty navigates her own complicated feelings and a cringeworthy new nickname.

Kitty enlists in Q's outdoor club in hopes of bonding with Dae outside of school, but she soon uncovers a clue related to her mother, leading her to embark on an investigation that also involves playing matchmaker.

Kitty, feeling lonely during the Chuseok holiday, decides to organize a special meal for other students on campus and receives unexpected assistance from an unlikely ally.

At Min Ho's upscale party, Kitty seeks closure on her feelings for Dae while unexpected romantic developments and tensions unfold among the guests.

Kitty agrees to help Yuri uncover Principal Jina's secrets during a Saturday detention, leading to unexpected truths and rising tensions.

During a school trip, Dae seeks to rebuild trust with Kitty, Yuri shares personal thoughts about Juliana, Florian talks candidly with Q, and Min Ho comes to a significant decision about his relationship.

As finals near, Kitty turns to her friends for academic support, but tensions rise at KISS and in personal relationships due to shocking revelations, conflicts, and heated confrontations.

Kitty faces a critical moment in her academic career as final grades and class rankings intensify tensions, forcing her to confront difficult truths about her future at KISS.

Kitty returns to Seoul with the goal of avoiding relationship complications and learning more about her mother, but her plans are disrupted by new roommates and lingering romantic feelings.

Kitty begins pursuing a new romantic interest, but an evening of dancing leads to unexpected complications. Meanwhile, tension rises in class as a competitive rivalry unfolds, and Q faces underhanded tactics from a track rival.

During the Seollal holiday, Kitty and Praveena ask Min Ho to assist in a heist, Juliana faces off with Yuri, and a long-awaited emotional connection finally develops between two characters.

A weekend trip to Min Ho's ski cabin takes an unexpected turn when a snowstorm traps Kitty and the group, cutting them off from the outside world and leading to unexpected disclosures.

Suspicions surrounding Stella intensify, prompting Kitty to investigate leads about her long-lost relatives while Yuri attempts to reconcile with Juliana. Meanwhile, a new scandal emerges, further disrupting the school.

Min Ho and Yuri work to mend strained relationships, while Kitty receives an unexpected visit from someone familiar who delivers news that could alter the course of her life.

As the Cherry Blossom Ball approaches, Kitty prioritizes family matters while suspecting something about Stella. Meanwhile, Yuri assists Dae in getting ready for his performance.

Stella works to finalize plans for her concert, while Kitty contemplates whether to express her feelings before the semester concludes, adding emotional tension to the season's final stretch.

As summer break approaches, Kitty decides to confess her feelings to Min Ho, but an unexpectedly crowded trip to Busan complicates her plans.

Kitty arrives in Seoul with ambitions for a standout semester, but her plans are complicated by the return of a confident former classmate determined to outshine her.

Min Ho coordinates Eunice's video shoot while a fashionable new character challenges Kitty's confidence. Meanwhile, Yuri seizes a promising new chance to advance her goals.

While waiting for their midterm results, the group visits an amusement park, but Kitty becomes unsettled after struggling with a particularly intense ride.

Kitty attempts to set aside her doubts as loved ones gather for a Chuseok celebration, but tensions rise as long-buried secrets come to light, disrupting the harmony of the occasion.

A family visitor attempts to help Kitty cope with her struggles. Eunice's professional choice impacts Min Ho's situation. Q and Marius revisit an earlier chapter in their relationship.

Kitty works to repair strained friendships before Yuri's upcoming fashion show, as others also attempt to reconcile the group's relationships.

The KISS crew comes together to celebrate Kitty's 18th birthday, reflecting on past relationships, exploring new possibilities, and considering fresh starts.