The five Boney Porcupines could not even graze Ban and the others.
The Royal Guard was too tough for them to damage, Eva was too fast for them to hit while Ban was more like a turtle than a human with his impenetrable defense called the Ant Mask and Noble Moth Cloak tandem.
The Boney Porcupines could only resign to their fate of becoming Ban's ingredients for his future medicinal soup.
Ban did not waste time as he plucked the White Spikes of the Boney Porcupines they just killed. On the other hand, Eva unsummoned the Royal Guard so that there's no time wasted with it just lingering outside.
He only needed three White Spike but he ended up getting five, so he kept it as he could still sell it to Joana later. As he was far from Delo and Belle, he did not hesitate to store it inside the Dimensional Storage for safety purposes.