Takeru, otherwise known as the god Susanoo, is the last hold out yet to engage in any extracurricular activities. With their graduation hanging in the balance, Yui must duel with Takeru to see whether or not he will join a club.
The newly formed student council decides to start joining after-school activities, except Hades. With his love of the stars, Yui suggests he join the Astronomy Club, but he coldly refuses. Yui is determined to find out why.
Yui finds out the reasons why she and her godly classmates have been transported to a school in the skies. In order to get home, they must sufficiently strengthen the bond between man and god by the time they are ready to graduate.
After being swept away by a magic sword to an unknown yet beautiful world, Yui finds herself in the company of gods with a sacred order bestowed upon her from Zeus himself: strengthen the bonds between man and their deities.