Helena's reference is the Kanade Tachibana from the Angel Beats anime series Angel Beats! is a 13-episode Japanese anime television series produced by P.A.Works and Aniplex and directed by Seiji Kishi. The story was originally conceived by Jun Maeda, who also wrote the screenplay and composed the music with the group Anant-Garde Eyes, with original character design by Na-Ga; both Maeda and Na-Ga are from the visual novel brand Key, who produced such titles as Kanon, Air, and Clannad. The anime aired in Japan between April 3 and June 26, 2010, on CBC. The story takes place in the afterlife and focuses on Otonashi, a boy who lost his memories of his life after dying. He is enrolled in the afterlife school and meets a girl named Yuri who invites him to join the Afterlife Battlefront, an organization she leads that fights against the student council president Kanade Tachibana, a girl also known as Angel with supernatural powers. Angel Beats! received generally positive reviews by critics. The integration of various individual elements together, such as musical performances, humor, and action, was commended in one review but panned in another, saying that the story was overloaded with too many elements. The anime was selected as a recommended work by the awards jury of the 14th Japan Media Arts Festival in 2010. In 2010, the character Kanade Tachibana took 10th place in the nomination "best character with coudere archetype” and 13th place "favorite female character from anime 2000-2010" according to shikimori.