After returning to Fuhren, Hajime heads off on a date with Shea, which comes to a sudden close when they stumble on a kidnapped merfolk girl.

Several days have passed since Hajime and his party returned safely from the Sunken Ruins of Melusine. Though Hajime knows he needs to get going, he doesn't want to break Myu's heart.

Daisuke and his shadowy co-conspirator overtly take action against Commander Meld, triggering the final phase of their nefarious plan. Meanwhile, Hajime encounters a group of bandits attacking someone he has met before.

As Hajime's deadly duel versus Noint continues, Aiko and Tio hatch a plan to assist Hajime. The other students also notice the alarming noise and gather together to figure out what's going on.