@DrHizzle It's just old demographics classification but it doesn't mean anything to the plot of manga AND these it's outdated since shitloads of shounen or seinen manga are very popular with women (like Hero Academiea or Tokyo Ghoul).a
@fart What the fuck are you talking about pedophiles don't like big boobs.
@DrHizzle Seinen is not a genre. This is just lighthearted slice of life with ecchi. It's seinen because it's published in Weekly Young Magazine (which also serializes: Nande Koko senei, Parallel Paradise, Satanophany...