If I Could Turn Back Time (Modern Hiccelsa)

Hot and Cold
Fire and Ice
Hiccup and Elsa

x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x

Hiccup and Elsa were perfect until one day Hiccup accidentally strikes Elsa with fire during an argument, killing her. He then spends the rest of his life mourning over her and regretting it...

Until one day he finds a watch that can turn back time...
But can he save her this time?

(MODERN HICCELSA!)
Please read, thanks! :)