The final episode of the season begins with Captain Kerioyl and the group preparing for a battle against the King of Souls. Boxxo devises a plan to weaken the enemy with flammable oil. The group engages in a fierce fight, and Boxxo's barrier proves crucial in deflecting the King of Souls' magical attacks. They manage to defeat him, but he reveals that he is a subordinate of a more powerful being called the Netherlord.

The Netherlord attacks the group, overwhelms them, and severely wounds Hulemy and Shui. Forced to retreat, Boxxo uses an automated external defibrillator (AED) to revive Hulemy and Shui, saving their lives.

The group returns to the Clearflow Lake Stratum and reports the incident to Director Bear, who decides to convene an emergency meeting with the directors of all strata. The news of their encounter with the Netherlord spreads throughout the village, and Boxxo is celebrated as a hero.

Towards the end of the episode, Lammis takes Boxxo to the place where they first met. Hulemy and Shui join them to express their gratitude to Boxxo for saving their lives. The episode ends with Boxxo reflecting on his journey and expressing his desire to continue living this life.

(the second season has already been announced)