The story begins when a baby named Tiger is left by his mother near a waterfall. A god watches him from above, takes him, and blesses him with special powers. After that, Tiger drifts with the river until he reaches a city.
There, a man and a woman see the small child near the water, completely drenched. They already had a son once, but he was lost. So, they decide to adopt Tiger and raise him as their own. The woman's name is Akira, who becomes Tiger's stepmother.
Akira enrolls Tiger in school. At 8 years old, Tiger starts attending classes. One day, during a school event at the park, Tiger sits alone on a swing, thinking: "How did my father die?" Nearby, a girl notices him and whispers to her friend, "That boy looks really strange."
Later that night, Tiger keeps thinking about his father's death. The next day, he goes back to school and trains with the school trainer. After three days of school, something strange happens—Tiger has a dream.
In the dream, he's standing in a huge battle stadium. The crowd is shouting: "Leon! Leon!" Leon steps into the arena, ready to fight. Tiger is confused but also prepares for battle. The fight begins, and after a long, intense clash, Tiger finally defeats Leon.
Just then, a new challenger enters: Tigor. The fight is fierce. Tigor overpowers Tiger at first, knocking him down and making blood spill from Tiger's mouth. Suddenly, Tiger's eyes change—first from blue to completely white. He strikes back, hurting Tigor.
But Tigor hits harder, pushing Tiger beyond his limits. This time, Tiger's eyes glow brighter, darker blue than before, shining with intense light. Filled with rage, Tiger attacks fiercely and manages to injure Tigor. Eventually, Tigor falls and is defeated.
At exactly midnight, Tiger suddenly wakes up in shock.
And this is where Episode 1 ends.