Sou Kami no Elvina

“双神のエルヴィナ” (Twin Gods of Elvina) is a light novel series written by Mizusawa Yume and illustrated by Kasuga Ayumu. It is a story about a boy named Soujou Teruma who loves goddesses and makes a contract with one of them, Elvina, the strongest goddess in the heavenly realm. Together, they fight against other goddesses who are trying to invade the human world or destroy the balance of the universe. It is a battle love comedy with a lot of action and humor.