Manga Recommendations

Emeralda

Pistis Sophia
Rawr, what I enjoyed lately were Noblesse and Magician. This has something special about those, eg. the main protagonist are not silly kids or childish teenagers, but quite mature adults. Because of the huge number of manga/manhwa with children as heroes, could someone recommend something with not intellectually challenged adults as the lead?

:challenge:
 
Hmm
Billy Bat
Monster
Zetman (there are some moments of childishness but otherwise it's pretty dark)
Naruto lol


Some other names just drifted away from my head D;