Ashes
It was the mark of their clan, passed down from one generation to the next. He had learned it from his uncle, and his uncle from his father. It wasn't a legendary Jutsu, or even a secret one, but it was theirs.
And now it was his turn to pass it on to his cousin. The fire and ash attacks that set them apart.
"C'mon, Konohamaru, spit it out." Hiruzen, son of Asuma Sarutobi, glared at his cousin. "Cigarette as well. My Mum says those are bad for you and that they will kill you and Shikamaru sensei."
"It's for effect, runt." Konohamaru said as he stamped out the cigarette. "When are you going to grow into your name. I mean Gramps was short, but your dad was a monster."
"We aren't all destined to be titans like you."
"Never mind that. I have to teach you something."
"Better not be that perv jutsu, my Mum would kill you."
"It's the Ash Pile jutsu of our clan." Konohamaru looked down at his little cousin. "You're a Chuunin now, and you need to learn this jutsu. It is the hallmark of our clan."
Speaking of Titans, any AoT fans? I mean seriously, how mother fucking badass was Levi!