Prequel: link
Genres: drama, psychological, romance
Episodes: 12
Plot Summary: The アニメ once again tells two stories. The first story takes place in the past. Himura Yuu meets a girl, Amamiya Yuuko who seems to know him, but he doesn't know her. However, he soon remembers that she was a girl whom he knew from long ago. Yuuko then tells him something which he never knew. He was her first 愛 since then, and her first 愛 has not ended yet. The 秒 story takes place in the present, just after the events of ef - A Tale of Memories. Shuuichi Kuze meets the cousin of Aso Renji, Hayama Mizuki...

Sequel: link
Genres: comedy, drama, psychological, romance, supernatural
Episodes: 12
Plot Summary: The アニメ revolves around two protagonists, Hirono Hiro and Asou Renji. On クリスマス Eve, Hirono Hiro meets a girl named Miyamura Miyako who was chasing a 財布 snatcher. Hiro later finds out that Miyako also goes to the same school as he does and they start hanging out together. This made Hiro's childhood friend, Shindou Kei, feel left out. Kei then tries to compete with Miyako for Hiro's affection and a 愛 三角形 ensues. The アニメ also tells the story of Asou Renji. Renji meets a girl named...