Upon settling in a new apartment complex, Yui Hanasaka initiates a chance encounter with her neighbor, discovering he attends the university she dreams of joining. Seeking assistance for her entrance exams, she forms an unexpected alliance. Meanwhile, Natsuki Momohara embarks on a journey to visit her independent brother in Tokyo. Simultaneously, aspiring singer Moka Aoshima reconnects with her childhood friend, an aspiring writer. Though initially disparate, these intertwined narratives underscore the inexorable pull of fate that links individuals sharing a common destiny, all within the confines of a single apartment building.