Yuuna Fuyou

A second-year middle school student who wishes to see the world beyond Shikoku's wall. Lily is a lively, charismatic young girl who believes that "seeing is believing". She values the ability to understand the truth for herself, and she will go to whatever lengths she needs to do so. Though foolhardy, she displays incredible intellect.

Lily's mother was visiting Shikoku on a trip when the Vertexes initially attacked. When she settled down in Shikoku, not only did she face discrimination from citizens, but she also developed chronic illness. Lily felt incredibly powerless, but did what she could to help her mother. She entered the entertainment industry as a child actor and worked harder on her studies, but nothing helped. She eventually left the industry and took a lot of time off from school to spend as much time with her mother as possible. Her mother passed away one year prior to the events of Fuyou Yuuna is Not a Hero.

Witnessing the relentless harassment her mother faced opened Lily's eyes to the harmful effects of a mob mentality, and she is disdainful of those who blindly believe whatever they are told. Learning that she is at risk of developing the same illness her mother had profoundly changed her outlook on life, causing her to spend every moment as if it is her last, even at the cost of behaving recklessly.