As a Demon King, It Makes Sense for a Magical Girl to Live Next Door.

Lin Yi traveled through the urban world of supernatural beings and became the Demon King, but it was a hundred years too late! The demon king's army in this world has been scattered and fled by the powerful magical girl camp, and can only carry out local struggles. Lin Yi could only lead the remaining soldiers and hid in an inconspicuous rental house, but accidentally awakened the "Villain Defense System". One day, a clumsy pink-haired magical girl who was too poor to eat moved in next door. During the day, she was a stupid neighbor who ate and drank freely and was scolded by Lin Yi until tears came to her eyes. At night, she was a magical girl who shouted slogans of justice, but was pushed to the ground and rubbed by the Demon King's army. "Uuuuuuuuuuuuuuuuuuuu Lin Yi, that big devil bullied me again today!" [Ding! Defense value from Magical Girl +999] Lin Yi rubbed her head and comforted her: "Don't be afraid, I'll blow his head off next time." Until one day, the magical girl accidentally broke Lin Yi's vest... "Are you the big devil?!" "Ahem, I said this is to train your actual combat ability, do you believe it?"