ef - a tale of memories.

On Christmas Eve, Hiro Hirono crosses paths with Miyako Miyamura, an impulsive girl who “borrows” his bicycle to chase a purse thief. The night takes an unexpected turn when Hiro finds the bike ruined and Miyako unconscious, leading the two to spend the evening together. When they realize they attend the same high school, their chance meeting begins to grow into something more—stirring jealousy in Hiro’s childhood friend Kei Shindou. Kei’s straightforward sincerity, in turn, draws the attention of Kyosuke Tsutsumi, a flirtatious photographer always searching for the perfect shot.

In another corner of town, Renji Asou—who dreams of being a heroic protector—meets Kei’s twin sister, Chihiro Shindou, a painfully shy girl often found reading alone at an abandoned train station. Their quiet friendship deepens as they decide to write a novel together, but Renji’s ideals are challenged when he learns Chihiro’s hidden truth. With guidance from two enigmatic adults, their stories weave into a bittersweet mystery of romance, longing, and the memories people cling to.