ef ~ A Tale of Memories is a tV series anime that premiered in fall 2007, produced by Shaft.

About the production: the story comes from a visual novel, there are 12 episodes of about 24 minutes and its current status is "finished".

Its main genres are drama, mystery, psychological and romance, with themes such as Amnesia, Twins, Heterosexual and Love Triangle.

On AniList, ef ~ A Tale of Memories has an average score of 75%, a very good score, and appears on 50,470 users' lists.

The franchise continues in or follows from: ef: a tale of memories. - prologue and ef: a tale of melodies..

On Christmas Eve, Hiro Hirono's bike is stolen by a girl chasing a thief who stole her purse. He gives chase and finds her unconscious and his bike ruined. The girl, Miyako Miyamura, soon awakes and the two begin to talk. After making sure she is okay, they end up spending Christmas Eve together. Later, Hiro finds out Miyako attends the same school as him and they begin to spend more and more time together, Miyako developing affections for Hiro. Kei Shindou -- Hiro's childhood friend who has long held a crush on him -- begins to become jealous and a love triangle follows. The series also tells the story of Renji Asou. One day, he meets Chihiro Shindou, the twin sister of Kei Shindou, at an abandoned train station. Even though she's very shy, they get along pretty well and begin meeting at the same spot everyday. However, Renji finds out that Chihiro was in a car accident years ago and as a consequence she suffers from a disability: her memory lasts only 13 hours. Nevertheless, after learning that Chihiro's dream is to write a novel, Renji finally decides to help her fulfill her dream while also trying to make her overcome the difficulties imposed by her condition.

Official synopsis from AniList.