Taek's irritation grew ever stronger as the maniac with the cross around his neck came closer as if he were examining Taek's potential. Taek tried his hardest to stay calm knowing that going an a rampage would either kill or fatally wound his instructor. This however was difficult his instructors every word was insulting, Taek simply looked the man in the eyes imagining him being ripped apart by vultures. He then smiled and said, "I want to learn smoke to smoke someone, I assumed you wanted to know what I wanted to learn so I told you... As for what it's advantages are, I'd say stealth, the fact that it's fatal if breathed in for too long, as well as becoming smoke part. I think one important disdavantage would be all wind techs, breaking apart techniques easily. However we can choke fire out. It's not a Kekkei Genkai as anyone can learn it, it's simply an advanced ninjutsu."