All of Shuichi Tsukishima's Novels

The Failed Swordsman Who Became The Strongest After Spamming The 100 Million Years Button
Author:Shuichi Tsukishima
    There was a mysterious old man who approached the failed swordsman with the “100 million years button”. A magic button which can achieve the same effect as training for 100,000,000 years if you push it. The failed swordsman who pushed the button had his doubts, but immediately felt tremendous power rising in his body. So he pushed the button many times. However it was a cursed button. The moment it was pushed, he was confined to the 100 million years prison of time. The first 100 years were