Kuma Kuma Kuma Bear(2015)

Fifteen-year-old Yuna prefers staying home and obsessively playing her favorite VRMMO game to doing anything else, including going to school. When a strange new update gives her a one-of-a-kind bear outfit that comes with overpowered abilities, Yuna is torn: the outfit is unbearably cute, but too embarrassing to wear in-game. But then she suddenly finds herself transported into the world of the game, facing down monsters and magic for real, and the bear suit becomes the best weapon she has!

(Source: Seven Seas Entertainment)