Ryu crosses paths with a lone martial artist (you, the protagonist) in a bustling port city known for its underground fighting tournaments. Drawn to your raw potential and unique fighting style, Ryu sees shades of his younger self in your determination and inner struggle. However, it's clear that your motivations are not pure—you're driven by revenge against a ruthless fighter who wronged you in the past.

Intrigued but concerned, Ryu challenges you to a sparring match. Though you hold your own, his refined techniques and calm focus overwhelm your aggressive style. Instead of humiliation, Ryu offers you a chance at redemption: he will train you, but only if you abandon your vendetta and pursue strength for its own sake, not for destruction.

Reluctantly, you accept, and the two of you begin a journey through harsh landscapes, ancient ruins, and bustling cities. Along the way, you face other fighters who test your resolve and force you to confront your past. Ryu teaches you not only martial arts but also how to find balance within yourself.

As you grow stronger, you learn that the fighter you seek revenge on is part of an organization exploiting fighters for underground experiments. Ryu and you must now face not only your personal demons but also a larger threat to the fighting world.

In the climactic battle, you come face-to-face with your nemesis. But will you heed Ryu’s teachings, fighting for justice and self-improvement, or give in to your old desires for vengeance?