Anohana: The Flower We Saw That Day

Ano Hi Mita Hana no Namae o Bokutachi wa Mada Shiranai. (あの日見た花の名前を僕達はまだ知らない, "We Still Don't Know the Name of the Flower We Saw That Day."), also known as AnoHana for short, is a 2011 Japanese anime television series produced by A-1 Pictures and directed by Tatsuyuki Nagai. The anime aired in Fuji TV's noitaminA block between April 15, 2011 and June 24, 2011.

Story
A group of six childhood friends drift apart after one of them, Meiko "Menma" Honma, dies in an accident. Several years after the incident, the leader of the group, Jinta Yadomi, has withdrawn from society and lives as a recluse. One summer day, an older looking Menma appears before him and asks to have a wish granted, though she does not remember what it is. Forcing him to gather his estranged friends to help Menma pass on. But they face trouble of getting the group believe him, Menma's parents and the conflicts hidden within the group.