Even after two years, Leo was still reliant on his 'Infinity Sword Wheel', especially now that it was no longer convenient when it came to both weight and length, but he couldn't just continue using steel swords considering that the novel's end-stage was already coming to start…
The Breathing Steel Sword still had some usefulness to it but its ability was more limited as one advanced in grade. Moreover, after helping him in more than one mission, it wasn't in its best state. Rather than using it whenever, Leo would only risk breaking his teacher's last gift in absolute emergencies.
Creak…
After exhausting his optional Hidden Pieces, it was naturally about time to obtain something worthy of his current ability, and it just so happened that such a thing popped up a week after he paused his mission streak. Of course, it wasn't really a coincidence.
"Hey…"
