Yuki Yuna is a Hero!
The Seiyou Middle School Hero Club is here to help! If you're in a pinch, just put in a request, and you'll get a helping hand.
Hero Club Five Tenets: Give people a good greeting! Try not to give up! Sleep well, eat well! If you're troubled, talk to someone! You're likely to succeed if you try!
Pay no attention to the secret organization behind the curtain, the Taisha, on whose behalf the club president sought recruits, those girls with the potential to become Heroes. With the blessing of Shinju-sama, a guardian deity, they'll fight alien spirits, the Vertexes, and stop them from breaching the barrier between worlds.