High school student Yuge Itsuki was sent off to a strange parallel world with his childhood friend Konatsuki Mahiru. It was the magical world of "Granvania", which was facing a crisis from the threats of "Impurities." Itsuki was summoned to this world as a "Visitor" to save this world, but to accomplish this mission, he had to perform a ritual known as the "Love Rituals..."
The hero that will save this world.
.البطل الذي سيُنقذ هذا العالم
Du bist der Messias,
der diese Welt retten wird.
El héroe que salvará este mundo.
El héroe que salvará este mundo.
Un des guerriers
qui sauvent ce monde.
Il guerriero che salverà questo mondo.
É o guerreiro que vai salvar este mundo.
Герой, который спасёт этот мир.