A huge majority of anime feature younger characters so I decided to look for some that have adult ones. These characters are 18 or older and are experiencing the wonders of adulthood. Let me know if I should add any more.
List of anime that adapt manga from Square Enix's "Young Gangan Comics" Imprint. [First Seasons Only] The imprint contains manga from: Young Gangan
If the anime was never completed, Then you're in luck. You can continue the story by reading the completed manga. This list has basically the same rules as a couple of my other ones, includes anime originally based on a manga, no...
grown-up characters and more complex themes; anime I appreciated as I got older because they had interesting things to say and food for thought, so this list leans towards the serious side, I guess
every anime I dropped, with episode count (sorry for the entries with no description, I've let the list slide but it's being updated)
This is a list of Anime that are either directly based on, influenced by or parody Super Hero Tokusatsu (Special Effects) series of which fans of the genre might enjoy.