The continuing adventures of Akira in the other world.
There is in fact one brief discussion from the other plot thread, those six brought to the world who left the king, which foreshadows a possible issue, but it's mostly Akira.
He reacts to the cat's message from the Demon King, rejects its demands that they kill it, and listens to Amelia's proposed plan to escape the room -- and, it turns out, the maze. And plunges them into Amelia's past.
It deals with her sister's power, a forest, giving the cat a name, two duels, a sneak attack with an arrow and a volley full of arrows, a memory of Amelia's, and more.