A certain technician is invited as a member of Chaldea's staff until a chance discovery changes everything and lands him into an ordeal with the fate of Humanity itself at risk.

Eren and Historia together have a connection with the truth behind the world and the various paths it has taken, over time leading to the memories of different ages being unveiled to them, along with the awaiting future. Eren and Historia seek to avert their oncoming fate and something beyond their fated ending against humanity. Slow-build, canon based AU. Note on Spoilers inside.

He was a hopeless man, a man who would amount to a little more than a fool. Yet this man pursued an endless dream, a dream in which he could hold her again... (A Shirou medieval Britain Fic-beginning before Saber drew Caliburn)

When he suddenly finds himself thrust back in time to the island of Lian Yu, and pursued by the greatest enemy he has ever faced, Oliver Queen tries to rectify the mistakes of his past and forge a better future. He is faced with the devastating question: If he were allowed to start over, with everything he had learned since then, could he really change things? Title may change.

A rescued Eren has to integrate back into society, learn to follow the chain of command and trust the friends from his childhood, all whilst simultaneously plagued by visions of the future he does not understand and watching the girl he's certain he's going to marry fall for another. For him, being back inside the Walls wasn't any easier than being outside of them.

With his final breath, he destroyed the Holy Grail. Devoid of purpose after discarding his ideals, he laid down to die. Through the work of fate Emiya Shirou does not die, but instead awakes in a new world. Now, he who no longer wishes to be a hero will have to forge his path once again in a world in need of heroes.

Trainee Eren Yeager wakes up with memories sent from the future. With this, what will change?