Manta Aisora

Using the power of music, three girls transform into magical "princesses" to protect their peaceful utopian home from threatening, mysterious creatures.

Mahiro Yasaka is just an ordinary high school student, until one day he is suddenly attacked by a dangerous monster. Just when everything seems to be lost, he is saved by a strange girl named Nyaruko, who claims to be the shape-shifting deity Nyarlathotep from horror author H. P. Lovecraft's Cthulhu Mythos.