Assassination Classroom Manga is one of the best manga of recent times. It takes a very unique concept and makes it even better with great characters, comedy and some pleasant surprises every now and then. On top of doing all these, it teaches values and gives valuable advice.
Boku Dake Ga Inai Machi is a great mystery and thriller manga that will draw you in with its immersing story-line and the undying suspense. Every chapter has something great to offer and keeps you wanting for more.
Tsubasa: Reservoir Chronicle is a mindfuck created by CLAMP, the king of mindbenders. Do not judge this manga by the poor anime adaptation, it’s great.
Slam Dunk is without a doubt the best sports manga ever made. The depth of story and the widely unique set of characters are what make this manga so good that you will want to keep reading more and more.
Mushi-Shi is probably the best slice of life manga. It follows the journey of Ginko as he travels around solving these mysteries regarding the Mushi. Simple yet the great story keeps you coming back.