When A Sudden Rainstorm Hit, I Was Stranded With My Girlfriend's Little Sister, And We Spent The Entire Night, Until The Break Of Dawn... Urara Kanon - Hanane Urara

The movie revolves around Hikaru and his girlfriend's little sister, Urara, who get stranded together during a sudden rainstorm. As they spend the night together, they develop a romantic connection, exploring their desires and intimacy. The story focuses on the forbidden relationship between the two, navigating the complexities of sibling-like bonds and the consequences of their actions.