Yes, he needed to become stronger, in every sense of the word. Whether it was his own level, his territory, or advancements in spell and divine arts, he needed it all.
Just wait until he cleaned up this wave of Shadow Wolf packs. When the teacher saw him again, he would surely be surprised!
Not quite, though. Given the teacher's personality, he would probably tease Kael and say a bunch of nonsense before expressing his surprise.
For example, "Kael, my good student. As our strength grows, our bodily structure becomes more subtle and complex. From the perspective of life propagation, it definitely has some impact. I suggest you…"
Such bizarre nonsense was exactly the type of thing Mr. Luxius would say!
Although Kael didn't quite understand why Mr. Luxius was so keen about his students' future partners' progress.
He didn't seem like the kind of person who enjoyed matchmaking!