Uno Yamaguchi, or mostly called Saitou, is not just a random nobody high schooler. In this story, Uno will experience a lot of unexpected things in life, he will enter the world of mercenaries for multiple reasons. Let us join Uno on his new teenage life. DISCLAIMER: All characters and places are FICTIONAL! Don't take everything in this story seriously. Anyways, don't report or ban this story, because it's all FICTIONAL!