Shirou Emiya doesn't want to work overtime

This is just the story of a sidekick named Justice.
The story of Shirou Emiya.
At a certain moment, at a certain point in time, a door that should not have appeared appeared in front of a man named Emiya Shirou.
He is just a half-baked magician who only knows strengthening magic.
He is just an ordinary person who doesn't even have the power to save others.
He is just a righteous companion who drowns in his own ideals.
Emiya Shirou——
Who are you saving? Sakura, your drowning ideal, or yourself?