Last Savior

is a Japanese light novel series written by Yagi Uzuki, with illustrations by Ogipote. The series began publication on November 10, 2012 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
The time is 2140 AD.

Exposed to the relentless violence of the worst enemy in history, the "angel," humankind has drastically reduced its numbers and is on the verge of extinction ... Having encountered a bizarre accident and being blown away from the peaceful world of 2015, Ayatsuki Nagisa stands up to find hope in his own destiny and the future of humankind, despite being upset by the harsh conditions. Carry a shining sword in your hand.

A new dimension speed battle that you have never seen before, opening !!