Last Savior

あらすじ

In the year 2140 AD, humanity faces extinction due to the relentless threat of entities known as "Aions," which have drastically reduced the global population. Nanagi Ryouga, a young man from the peaceful year 2015, is unexpectedly transported to this bleak future. Despite the harsh new environment, he resolves to fight for the future of mankind and his own destiny, wielding a radiant sword in a battle for survival.