The Grisaia series maybe?
Has pretty good plot, nudity in ep 1, Incredibly linear storyline, kind of a downer in its own way, character development and cute girls.
If they aren't available on Hulu or Netflix then use an anime portal.
Ads:
https://www.crunchyroll.com
http://gogoanime.io/ (kinda)
http://www.anime-planet.com/
Ad Free(kinda):
http://www.animestreams.net/
https://kissanime.to/
Series(In watch order):
https://myanimelist.net/anime/17729/Grisaia_no_Kajitsu
https://myanimelist.net/anime/29101/Grisaia_no_Kajitsu_Specials
https://myanimelist.net/anime/29093/Grisaia_no_Meikyuu__Caprice_no_Mayu_0
https://myanimelist.net/anime/31324/Grisaia_no_Meikyuu_Special
https://myanimelist.net/anime/29095/Grisaia_no_Rakuen
https://myanimelist.net/anime/31368/Grisaia_no_Rakuen_Specials
http://www.youtube.com/watch?v=cXI6Rb3RqSg