lit. "Lily Bear Storm"[2][3]) is a Japanese yuri anime television series produced by Silver Link and directed by Kunihiko Ikuhara. The series was first announced via a website in August 2012, where it was referred to as the "Kunihiko Ikuhara/Penguinbear Project." The series first aired in Japan between January 5, 2015 and March 30, 2015 and is licensed in North America by Funimation. A manga adaptation illustrated by Akiko Morishima was serialized in Gentosha's Comic Birz magazine between February 2014 and April 2016 and has been licensed in English by Tokyopop under the title Yuri Bear Storm. The name appears to be a reference to Akira Yoshimura's novelization of the Sankebetsu brown bear incident, The Bear Storm (羆嵐 Kuma Arashi), though any more concrete link besides the presence of human-attacking bears is only speculated.The anime and manga versions have significantly different plotlines.

In the anime version, humans have created a Wall of Severance to separate themselves from the bears, who grew violent and attacked humans after a far-off planet known as Kumaria exploded, turning into a meteor shower that fell upon earth. Two bears, Ginko Yurishiro and Lulu Yurigasaki, sneak through the Wall of Severance and disguise themselves as humans, enrolling in Arashigaoka Academy and taking an interest in Kureha Tsubaki, a human girl who despises bears.

In the manga version, the shy Kureha meets the transfer student Ginko, who appears in her dreams as a bear princess. As Kureha becomes friends with Ginko and gets to know her, she learns that Ginko is wrapped up in her own world in which she believes everything is made up of bears.