Campione! Matsurowanu Kamigami to Kamigoroshi no Maou

Synopsis

Godou recalls from Susanoo that Metis, who is Athena's mother, wants to swallow the heavens as prophesied in the Gorgoneion, which actually does not pertain to Athena. Arianna and Amakasu come to retrieve Godou as well as Athena, who seems to have lost her memories after Metis previously absorbed her powers. Erica, Yuri, Liliana and Ena stay behind to try to buy enough time against Metis to allow Godou to recharge his powers. However, after the four are easily defeated, Metis comes after Godou, who manages to revive his powers. During the fight, Metis absorbs Athena's powers again, transforming her into her true goddess form. In order to prevent the prophecy from coming true, Godou receives help from each of the four girls to expose Metis's weaknesses. With the last kiss given by Athena after summoning her with the Gale, Godou is able to achieve victory, banishing the black aura from the sky and returning everything back to normal.

(Source: Wikipedia)