Yuki Yuna is a Hero - Volume 1

Yuna Yuki is an ordinary second-year middle school student at Sanshu Junior High School. She gets up in the morning, gets ready for school, goes to classes, participates in club activities, plays with friends. But there is one extraordinary thing about Yuki - she belongs to her school's Brave Hero Club. What does the Brave Hero Club do? What are the mysterious beings called "Vertex"? Yuna Yuki and her friends' story takes place in Year 300, Era of the Gods.