A Magical Index and A Certain Scientific Railgun fanfic. A Gold Saint who died in battle during the Holy War transmigrates to Academy City and begins an everyday life there.
At last, Kagami Amamiya, who longs for peace, gets the life he has always dreamed of. But little by little, he discovers that beneath Academy City's peaceful facade lies a darkness so deep it inspires fear.
What kind of sparks will fly when the Cosmo meets supernatural powers?
And how will he protect his everyday life?
The story focuses mainly on A Certain Scientific Railgun, with A Certain Magical Index playing a supporting role.