Ano Hi Mita Hana no Namae o Boku-tachi wa Mada Shiranai. (あの日見た花の名前を僕達はまだ知らない。, , lit. "We still don't know the name of the flower we saw that day".?), also known as AnoHana, is a 2011 Japanese anime television series produced by A-1 Pictures under the direction of Tatsuyuki Nagai. The series follows Jintan, a shut-in, who gets a request to fulfill a wish of one of his childhood friends, Menma. In order to grant Menma's wish, Jintan must find and reunite with four other friends who have grown apart since Menma died.
an extended description!