In the season finale of XO, Kitty, titled "OTP," the series delivers a whirlwind of emotions and plot twists that leave viewers on the edge of their seats. The episode picks up immediately after the events of the previous one, with Dae's confrontation with Min Ho, who he believes is the cause of his breakup with Kitty. However, Kitty reveals that her feelings have shifted towards Yuri, adding another layer to the love triangle that has been brewing throughout the season.
As the drama unfolds between Dae, Kitty, and Yuri, Principal Lim drops a bombshell on Professor Lim, revealing that she kept their son Alex a secret to protect Professor Lim's future. This revelation is met with shock and disbelief, but eventually, Principal Lim and Yuri have a heartfelt conversation that leads to a reconciliation. The news that Alex will be joining them for winter break and that Juliana is returning after Principal Lim's intervention with her parents adds a sense of hope for the future.
Kitty's confession to her father about her feelings for Yuri marks a turning point in her character's development. Fearing that she might fail out of school, Kitty begins to pack her bags, only to be interrupted by Q, who shares his own drama involving Florian and the cheating scandal. This leads to a heated argument between Kitty and Q, highlighting the complexities of forgiveness and understanding within their friendship.
The question on everyone's mind is whether Kitty has managed to pass her finals. When the exam scores are posted, Q discovers that Florian's cheating has landed him the top spot in the class, potentially jeopardizing Dae's scholarship. Meanwhile, Kitty's relief at passing her exams is short-lived as her excitement leads her to reveal her secret stay in the boys' dorms, resulting in the loss of her scholarship and expulsion from KISS.
Despite Principal Lim's inability to overturn the school's decision, she shares a tender moment with Kitty, gifting her a letter from her mother that was sent after her time at KISS. Kitty, in turn, gives Principal Lim the mixed tape she found among her mother's belongings, which was a gift from Professor Lee during their romantic past.
Kitty's departure is marked by a series of goodbyes, including a poignant moment with Dae where they exchange heartfelt words about their first love. Dae's attempt to stop Kitty from leaving is met with a bittersweet farewell at the airport, where they acknowledge their love for each other but accept the reality of their situation.
As Kitty prepares to board her plane, she encounters Yuri, who she attempts to confess her feelings to. However, Juliana's arrival interrupts this moment, leaving Kitty's emotions unspoken. Juliana's joy at reuniting with Yuri is tempered by his own actions, as he calls his mother to advocate for Kitty, showing his support for her despite the circumstances.
The episode concludes with Kitty's voiceover reflecting on her time at KISS, which turns out to be her reading aloud the letter from her mother. The letter reveals a mystery man named Simon, hinting at untold stories from her mother's past. The final twist comes when Min Ho, who has developed feelings for Kitty, joins her on the flight back to LA, confessing his emotions as the season draws to a close.
The season ends on a high note of suspense, with numerous storylines left unresolved, leaving fans eager for a second season to delve deeper into the lives of the characters and the secrets of KISS.