Ano Hana follows the flashbacks of six teenagers. Well, to be exact, five of them.
Honma Meiko (Menma), Yadomi Jinta's childhood friend returns after many summers. Jinta, annoyed by her childish attitude, tries to ignore her with everything he's got. But Menma is so persisting, Jinta can't overlook her anymore.
Jinta, who has been an all energetic boy from his childhood now finds himself to be a lethargic teen, uninterested and unmotivated to absolutely everything, ignores people around him and a complete shut-in. As he merged himself to video games over the years, his grades dropped and couldn't even make it to a reputed high school.