ゼロから最強成金へ~俺だけ呼吸で稼ぐバグ人生~

Bullied at his graduation party, a system activates. Now he earns cash just by breathing! From broke loser to underground king, he crushes enemies and wins hearts. But when the system's tasks get deadly, he learns: becoming a billionaire is easy. But staying alive is the real game.