Episode 7 begins with soldiers discovering a non-functioning crystal in the ruins of Disposal, a place where the survival rate is famously zero, suggesting that someone might have survived against all odds. The captain of the group dismisses the anomaly, remarking that such a thing has never happened before.

Meanwhile, a merchant in the city tells the legend of the "Lord of the Flies," a demon who once ruled an island fortress. This story serves as background for exploring the dangerous and powerful beings that inhabit this world.

The narrative shifts to a discussion among key leaders, including Ganozea, King of the White Wolves of Magnar, and Yusef, King of the Steadfast of Alion. They confirm the death of the Five Dragons, elite warriors once considered invincible. Suspicion falls on Seras Ashrain, but conflicting reports suggest that a group of cursed magic users known as the Ashint might be responsible. This revelation highlights the growing threat to the Holy Alliance, especially after the loss of the Black Dragon Knights, who were crucial in the fight against the Great Demon Empire.

Touka and Seras arrive in a bustling city known for its bloodsport coliseum, an arena where slaves and mercenaries fight to the death for the amusement of the masses. Here, they learn of Eve Speed, a leopard warrior who hasn’t lost a fight in three years. Although she has earned enough to buy her freedom, Eve continues fighting to secure another’s freedom, revealing a deeper motivation behind her actions.

Seras gathers information about Eve and the deadly nature of her upcoming final match. It turns out that previous bloodsport champions often died in their last fight, suggesting that the duke who runs the coliseum has been rigging the game. This makes the situation even more intriguing for Touka and Seras, as they consider how to strike a deal with Eve, who likely knows the whereabouts of the elusive Witch of Taboos.

In a quieter moment, Touka and Seras reflect on their journey and the challenges ahead. Seras, deeply loyal to Touka, struggles with her feelings as she tries to fulfill her role as his sword, suppressing her emotions to support him in his quest for revenge.