Campione! Matsurowanu Kamigami to Kamigoroshi no Maou

Synopsis

Karen tells Liliana that the only way for Godou to defeat Perseus is through a kiss. However, Godou goes off on his own, disregarding such advice. When Liliana finds Godou near the coliseum, Perseus arrives and challenges him to a duel in front of the audience. Even when using the Bull to attack, Godou does not fare well against Perseus, much to Liliana's worry. Since Godou still does not have what he needs to achieve victory, Liliana makes a decision to kiss him, which gives him the necessary knowledge to defeat Perseus. During the battle, Godou reveals that Perseus disguised himself as a Greek god, for he is actually the Persian god Mithra. Although Godou breaks Perseus's bow and arrow, Perseus stabs Godou with his sword, but Godou uses the Camel to kick him away. Perseus then uses his ability to force Liliana into subservience to attack Godou, but Liliana manages to break free of the spell after hearing Godou call her name. Liliana shoots Perseus with her bow and arrows, allowing Godou to use the Boar to defeat Perseus. Athena appears to heal Godou's wounds by kissing him before departing, much to Liliana's chagrin. Perseus is killed by a shadowy figure with a scythe, who devours him in her serpent form. The other girls finally visit Godou in Liliana's room, where Karen had purposely told them about Godou's victory achieved by Liliana's kiss.

(Source: Wikipedia)