Seinen manga is classified as “shounen,” but unlike shounen manga, the seinen genre tends to focus more on psychological depictions of everyday life. Here’s a good example:
Seinen Manga Miscellany by Tetsuya Wakano from 2009.
Art from Seinen anime and manga is often associated with a unique atmosphere created by scenes or backgrounds including mountains, rivers, and other natural occurrences. The natural settings are often drawn realistically or abstractly . There will be many small details that are personalized to give the work depth of personality.