Comment by lusaro on szakal

Exactly, and above all else, what they need to be "close" to Jiwoo's level are real-life fights. Simple training won't achieve anything. And something silly about Jisuk (but obvious in his character) is that he's often too proud to ask his own sister, an Awakened One with a lot of experience in the field, for help. Jiwoo has been training with her and it's been very helpful. Jisuk needs to learn from her.