Despite the conclusion of the I’m Getting Married to a Girl I Hate in My Class anime on March 21, 2025, fans continue to ponder the intricacies of its finale. In a pivotal moment, Himari shared an unexpected kiss with Saito Hojo while he was out buying groceries. This left her with a sense of having claimed Saito’s first kiss. However, a twist emerged just moments before the episode wrapped when Saito’s cousin, Shisei, disclosed a surprising truth—Himari was not Saito’s first kiss.
Unraveling the Mysteries of Saito’s First Kiss

While the climax of I’m Getting Married to a Girl I Hate in My Class predominantly focused on the emotional confrontation between Akane Sakuramori and Himari regarding their feelings for Saito, it also spotlighted the question of Saito’s inaugural kiss. This tender moment transpired amidst their grocery shopping outing, where Himari, after a heartfelt dialogue, leaned in for the kiss.
Given that Saito had never shown romantic interest in anyone before, Himari believed she had experienced a significant milestone in their relationship. However, Shisei’s shocking revelation nullified her assumption, exposing the fact that she was not his first romantic encounter. Following this, Saito was seen looking disheartened outside the school.
Upon being questioned by Maho and Shisei about his mood, Saito expressed his frustration stemming from another argument with Akane. Maho pointed out that the conflict was triggered by Saito’s kiss with Himari. It was at this moment that Shisei intervened to clarify that Himari was not Saito’s first kiss, but left them all in suspense with her ambiguous storytelling approach.

This perplexing situation left Saito, Maho, and Himari requesting Shisei to reveal the truth, but her tale began with a puzzling reference to “mankind’s origin,”leaving them bewildered. The finale of the anime skirted the definitive answer regarding Saito’s first kiss, but insights from the original light novels provide clarity.
In Volume Seven of Seiju Amano’s light novel series, it is depicted that Shisei kissed Saito while he was asleep at her home when they were just five years old. This candid moment did not go unnoticed; Akane observed the scene but was too bewildered to react. When Saito woke up, he found both Shisei and Akane present, leading to a rather indifferent reaction.

Shisei, unfazed by the implications, reassured Akane that there was no cause for alarm regarding her actions. She outright stated that she was indeed Saito’s first kiss, not Himari. As the story recounts, when Saito stayed overnight at Shisei’s home, she seized the chance to kiss him—an event he remained oblivious to at the time. In light of this revelation, Saito’s reaction was nonchalant, determining that the kiss “didn’t count” because they were just children. Nevertheless, it held special significance for Shisei, who harbored genuine feelings for her cousin.
Conclusion
Although the relationship between Saito Hojo and Shisei wasn’t the focal point of the I’m Getting Married to a Girl I Hate in My Class storyline, the events detailed in the light novels underscore the depth of Shisei’s affection for her cousin. Even as a distant memory from their childhood, Shisei treasures her status as Saito’s “first kiss,” a sentiment emanating from a heart full of love.