Its survival instinct unleashed its last strength, frantically twisting its body in an attempt to break free from Wang Fan's pursuit.

"You can't escape!" Wang Fan roared, like a mad beast, his Bloodthirsty Halberd slashing fiercely at the Sea Demon King with unstoppable momentum.

The Siren King stared in horror as the halberd pierced through his defenses and plunged into his back.

"Ah!" The Siren King let out a painful and desperate scream, and black blood gushed out like a fountain.

Without the slightest hesitation, Wang Fan vigorously stirred the Bloodthirsty Halberd, widening the wound and causing the Sea Demon King's blood to flow out even faster.

As blood continued to gush out, the Bloodthirsty Halberd seemed to have been activated by some terrifying instinct, and began to frantically absorb the sea monster king's blood.

The Siren King could feel his power rapidly draining away, his body growing weaker and weaker, and fear engulfing him like a tidal wave.

"No...don't..." The Siren King struggled weakly, his voice filled with pleading, but Wang Fan remained unmoved.

After absorbing a large amount of the Sea King's blood, the Bloodthirsty Halberd shone brightly, and its chilling aura became even more intense.

Wang Fan could feel his connection with the battle halberd becoming stronger, and the power emanating from the halberd began to nourish his body.

This allowed his originally exhausted body to gradually regain some strength.

The Siren King's body gradually withered, and his life force grew weaker and weaker.

Finally, after a violent tremor, its body went completely limp and became still.

Wang Fan forcefully pulled out the Bloodthirsty Battle Halberd, watching the Sea King's corpse slowly sink into the seabed.