The diary and the dragon heart
Status
Summary
Olivia Eiron Fullathorn is the only friend of Hiccup horrendous haddock III, that is until they both get thrown into dragon training and he actually is good... she knows he's hiding something, but what? OC/? , Hiccup, Astrid, Ruffnut and Tuffnut, Snotlout, fishlegs and a whole lot of dragons.