Darren Shan
Fairy Tail
Writing quality varies is my only complaint. The reason is simple: The author has major issues with his publisher and editor in terms of quality and quantity and this only gets worse the farther you go into the series. Hiro Mashima was restricted in several instances from doing what he wanted with the series. An unhappy author makes an unhappy narrative.
Heaven & Hell Roman Company
Really rather charming! The characters were very distinct and fun to watch.
Noblesse
The most lit piece of fiction I have ever read.
Naruto
Every Shounen trope in existence which underuses its most valuable characters. The Concept was simple and fresh but is spoiled with obnoxious friendship scenes and half felt drama. Too much build up only for a disappointing reveal.
Nanatsu No Taizai
A breath of fresh air in Shounen. It uses tropes the way they are meant to while still pulling originality out god knows where!
Gurenki