——"I'm just an ordinary high school girl!" (But no one believes it)
Chihaya Aine, the guitarist of the MyGo band, was suddenly swallowed up by a golden magic circle while practicing one day and traveled to the Holy Grail War scene in Fuyuki City twenty years ago. What's worse is that she has turned into the glittering and gorgeous character in her mobile game: with long flowing golden hair, suspended horns of light, and a halberd with flowing stars, she doesn't look like the 'ordinary JK' she claims to be.
After being mistaken for a powerful Berserker summons by Illyasviel, Aine had to face the fact: she could not go back. Unless - help this little master with silver hair and red eyes win the Holy Grail War. But here's the problem, she can't fight at all! (Perhaps)
