Rainy Day Serenade

Hina Katagiri often dreams of her younger self playing with a mysterious boy on rainy days, though she dismisses it as just a childhood fantasy. Now in high school, she spends her time on club activities and cherishing her great-grandmother’s necklace. One day, Hina suddenly finds herself in the backyard of a grand mansion, where she meets Takaaki Hongou, one of its residents. Mistaking her for his fiancée, Hinako Kitamine, he welcomes her warmly. Thinking she’s in a dream, Hina goes along with the misunderstanding-until she encounters the real Hinako and realizes the shocking truth: she’s been transported back to 1907. To make matters worse, her precious necklace is lost somewhere in Takaaki’s home. With Hinako’s reluctant help, Hina keeps up the charade, pretending to be her to stay close to the household. But as she spends more time with Takaaki, her growing feelings for him complicate everything. Meanwhile, the way back to her own time seems to slip further out of reach.