Familiar Spirit of the Demon Lord

Описание: Today is the 2400th birthday of the prince of the demon's realm (you). You make a lot of effort in a demon summoning ritual in order to have your own familiar spirit, but a human girl is summoned instead of a demon...!? Even though you are the expected next demon lord, people may underestimate your magic ability... You have to prove your ability by making the human girl into a demon!