Who has read it, and why isn't it here? It's quite probably the greatest Manwha ever written and I can't find it anywhere on this site.
To quote TVtropes, Veritas is a martial arts sonyun Manhwa written by Yoon Joon-sik and illustrated by Kim Dong-hoon. It is published in Booking magazine. The official website can be found here. The manhwa is about a hard headed high school student who seeks to become the strongest and find out who killed his master.
Gangryong is a high schooler unlike others. He has always had a dream of being the strongest. One day he meets Youcheon aka ''Lightning Tiger'', who saves him from a bunch of thugs. Gangryong begs Lightning Tiger to teach him. Lightning Tiger teaches him apowerful skill and then disappears. One year later, people come to see him and announce that his "master" is dead and show him the only body part they managed to recover was his charred, broken remains of his arm. Because he was his only student, Gangryong has to follow them and go to a school where everybody has supernatural powers. He accepts this as a way to farther his training and to find out why his master was killed. There, he endears himself to the student body with his reckless and cocky attitude.
Seriously, this is probably the most hardcore thing ever without going into Black Lagoon territory. Everything it does it does right. The plot does not revolve around the main character, like in most shounen titles, but the main character isn't denied his right, like in Tenjou Tenge. There are no undeserved power-ups, the power curve is realistic, and the main character is realistic, likeable, and has actual faults, but not played for comedy like in Beelzebub.
Simply put, this is a seinen done right. Who's read it and loves it?