One's First Love (S01E02)

On their first night together, Yuzu found herself unexpectedly kissed by her stepsister, Mei. Since that moment, Yuzu can't shake thoughts of Mei, while Mei acts as if nothing occurred. Meanwhile, Mei's grandfather, who oversees Aihara Academy, brings her back to his mansion. Troubled by the melancholy look on Mei's face during the kiss, Yuzu decides to visit the mansion to uncover Mei's real feelings. But what will she discover?