U19 is a series with a interesting premise, but it may end up becoming another generic shonen series. Initially, after reading the first chapter of the series, I was somewhat interested in the plot, since it tackles a touching topic about the superiority of adults and the inferiority of children "under 19." However, due to this series being in Weekly Shonen Jump I am afraid that this series may end up being another new series ended shortly due to the popularity and rankings.
So far while reading the first 3 chapters of U19, the story isn't really doing anything new, but the author of the manga is doing something quite unorthodox, since he allows for the main character to confess his feelings to his childhood friend within the first two chapters, and he slowly building up hype for something to potentially happen.
The artwork is rather good, and the panels are very clear and the actions are easy to follow.
Overall, this series so far is pretty interesting, but I am not sure how the manga will perform.