7th Garden Vol. 1 (manga)

Awyn strives to be the perfect gardener—and perfect man—to win over his human mistress. But then he unwittingly awakens the demon Vyrde, and his village is attacked by crusader knights! Desperate to protect the apple of his eye, Awyn pledges fealty to Vyrde in exchange for the ability to wield a powerful demonic sword. What he doesn’t know is that his new demon mistress is scheming to slay the six angels who rule the world—so she can. Then more enemies attack, one of them armed with…a particle-ray cannon?!