My Charity System made me too OP

The Harpy Queen's emerald eyes gleamed with intrigue. "Oh? The Shadow Seal. You've already proven your strength against the Wraith Lord. But can you handle the wind?"

She flapped her massive golden wings, and the entire floating island tilted, shifting its gravity. Leon and Ravina were forced to leap onto another platform to avoid falling into the abyss below.

Ravina gritted her teeth. "She's manipulating the wind to control the battlefield!"

Leon chuckled. "Good. That makes things interesting."

He kicked off the platform, launching himself into the air toward the Harpy Queen. She met his attack mid-air, their blades clashing in a spark of energy. Every strike Leon made was met with a swift counter as she danced through the air, using the currents to move effortlessly.

Then, she flapped her wings again, sending a hurricane-force gale that sent Leon flying backward. He crashed onto another platform, the wind knocking the air from his lungs.

The Harpy Queen landed gracefully on a floating spire, completely untouched. "You fight well, but you are bound by the earth. I, however, am one with the wind."

Leon wiped blood from his lip and exhaled. "One with the wind, huh?"

He closed his eyes, feeling the flow of the wind around him. It wasn't just an obstacle—it was everywhere. It wasn't just pushing him—it was guiding him.

A smirk crossed his lips. Then I'll use it.

Leon vanished.

For the first time, the Harpy Queen's eyes widened. "What—?"

Before she could react, Leon reappeared above her, blade crackling with both Shadow and Wind energy.

"You're not the only one who can move with the wind."

He slashed downward, his blade cutting through the very air itself. A shockwave of pure force tore through the battlefield, slicing through the floating spires and sending the Harpy Queen hurtling downward.

She barely managed to recover, her wings faltering. Her once-confident gaze now held a trace of respect.

"You… learned my element mid-battle?"

Leon spun his sword in his hand, the wind now swirling around him, bending to his will. "What can I say? I adapt."

The Harpy Queen landed, breathing heavily. Then, she laughed. "Very well. You have proven yourself worthy."

A bright green sigil appeared in the air—the Wind Seal.

Leon reached out, and the seal fused into him, sending a rush of storm-like energy through his veins. He clenched his fist, feeling the newfound power.

Ravina stepped beside him, a small smile on her lips. "Another victory."

Leon exhaled, his smirk never fading. "Yeah. Now, let's see what's next."

"Next is the Frozen Cavern. The Ice Seal there is guarded by the Frost Revenant, a powerful knight-type undead," she said as he nodded.

"Let's go then. We only have two weeks left to find this so-called hidden treasure," he said as she nodded, and they began to move.

Frozen Cavern – The Domain of the Frost Revenant

Leon and Ravina trekked through the snow-covered mountains, their breath visible in the freezing air. The path ahead led to an enormous ice cave, its entrance covered in thick icicles that shimmered like crystal fangs.

"The Frozen Cavern…" Leon muttered, gazing at the eerie blue glow coming from within. "Feels like a perfect place for an undead knight."

Ravina nodded. "The Frost Revenant is no ordinary undead. It was once a legendary warrior who fell in battle and was resurrected by ancient magic. It wields an ice-forged greatsword, and its armor is said to be impervious to normal attacks."

Leon smirked. "Good thing my attacks aren't normal."

As they stepped into the cavern, a deep chill seeped into their bones. Ice pillars stretched toward the ceiling, and frost-covered statues of long-forgotten warriors lined the path. Aether energy pulsed faintly in the air—this place was ancient.

Suddenly, the ground trembled. A deep, hollow voice echoed through the cavern.

"Who dares disturb my slumber?"

From the icy mist ahead, a towering figure emerged—the Frost Revenant.

It was clad in blackened frost armor, its tattered cape frozen stiff. Its glowing blue eyes locked onto Leon and Ravina with an eerie, soulless stare. In its hands was a massive, ice-crusted greatsword, pulsing with freezing energy.

Leon exhaled, gripping his sword. "Alright, let's see if you live up to the legend."

With a burst of Aether, he vanished from sight, reappearing behind the Revenant with golden energy crackling around his blade. He slashed downward, but—

CLANG!

The Revenant blocked it effortlessly, its ice-forged sword absorbing the impact. A blast of cold energy surged from the Revenant, sending Leon skidding backward across the ice.

Ravina unleashed a destruction spell, firing a crimson blast at the undead knight, but the Frost Revenant raised its hand, forming an ice barrier that shattered the attack.

"Pathetic." The Revenant's voice was emotionless. It stomped forward, causing the cavern floor to crack and freeze over. Spikes of ice erupted from the ground, forcing Leon to leap into the air.

Leon grinned mid-air. "Alright, time to get serious."

He extended his hand, and blood magic surged. Crimson tendrils wrapped around his sword, amplifying its power. At the same time, golden energy flickered through his veins as he combined Alchemy and Golden Magic, transmuting his blade into a divine weapon that radiated pure heat.

With a single downward slash, a golden-red shockwave tore through the cavern, melting the ice and forcing the Frost Revenant to take a step back for the first time.

The undead knight slowly raised its head. "Interesting…"

It lifted its sword high, and the temperature in the cavern plummeted to absolute zero. A blizzard of death erupted around it, the ice forming jagged spears, its armor glowing with an ominous blue light.

Leon's eyes gleamed.

"Now that's more like it."

Leon pushed forward, his golden-enchanted sword clashing against the Frost Revenant's ice-forged greatsword. Each strike sent shockwaves through the cavern, causing icicles to rain down from above.

The Revenant's movements were precise, its experience as a warrior evident in every swing. It didn't fight like a mindless undead—it fought like a battle-hardened knight, adapting to Leon's speed and techniques.

Ravina, standing off to the side, observed carefully.

"With each seal in our possession, the power of the next guardian increases," she noted, watching as Leon dodged a downward slash that split the ice beneath him.

Leon grinned, parrying the strike with a burst of Aether-infused strength. "Good," he muttered. "I was starting to think this would be too easy."