In a bustling office in Tokyo, the tension between work and personal life takes center stage as the story unfolds between浅野 (Asano), a dedicated employee, and her colleagues. Asano is preparing for an important business trip, and with it comes the expectation of proving her worth in the company. Her boss, 细田主任 (Hosoda-sensei), is confident in her abilities, even as she expresses her doubts about being able to keep up with the demands of the job. Meanwhile, her long-distance boyfriend, 彼氏君 (Koishi-kun), is constantly on her mind, and the thought of being away from him adds to her stress.
The trip brings her to a luxurious apartment in the city, where the atmosphere quickly shifts from professional to intimate. Asano and 细田主任 (Hosoda-sensei) are joined by a few other colleagues, including アリンちゃん (Arin-chan) and アイちゃん (Ai-chan), and the evening turns into a night of celebration, drinks, and unexpected seduction. As the night progresses, the line between work and pleasure blurs, and Asano finds herself caught in a whirlwind of emotions—excitement, tension, and a deepening connection with her coworkers.
As the night unfolds, Asano's thoughts drift back to 彼氏君 (Koishi-kun), the one who had proposed to her just days before. The distance between them becomes more apparent, and Asano's heart is pulled in two directions: the comfort of familiarity with 彼氏君 (Koishi-kun), and the electric energy of the company trip, where she is surrounded by people who challenge and excite her in new ways. The chemistry between Asano and 细田主任 (Hosoda-sensei) grows stronger, and the night becomes a test of her feelings—between the man who has always been there, and the one who has just entered her life with a promise of passion and possibility.
As the events of the evening reach their peak, Asano is left questioning where her heart truly lies. The journey between love and work, between the familiar and the new, is only just beginning.