After his dream is finally crushed, Izuku isn't quite sure there's anything left for him to live for, but...he can't exactly kill himself either, not without hurting the people he cares the most about. So, when he realizes that the quirkless can't technically be vigilantes, it seems like the best of both worlds. He'll be able to save people even without being a hero and, if he happens to die while he's at it...well, like Kacchan said, maybe he'd be born with a quirk in the next life. NOT MY STORY! BY Clouds (myheadinthecoudsnotcomingdown) on AO3

Izuku Midoriya is plucked from his time and ends up 300 years in the distant past. The year 2021, to be exact. The sixteen year old quickly adapts to this era of the past, and is taken in and trained by the British secret service. He becomes a 00 at 18, the youngest in history, and quickly makes the codename 007 legendary in the spy world. Entire organizations have set their weapons down and surrendered at the mere mention of his name. Barely a year after becoming the top operative of his department he disappears back to his own time, back to his own age, but with every skill learnt still intact. It's Midoriya. Izuku Midoriya. And he's got a licence to kill.