
ngl, if I was the villain, i'd kill jiwoo there w the opportunity lol but Id like to believe he's not a villain but a great antagonist

No he already considered that and wanted to kill Jiwoo before they killed him. Then he got sort of considerate accepting Jiwoo as a student of the top 10 and realized how pathetic he was being and changed his priorities.
Honestly I kinda like this guy more than the other disciple that wants Jiwoo's gf
Bodoh adorable