Kind of surprised how little of these movies I can find on my watched list. Representation, where art thou? I think these themes are more common in anime, and maybe newer youth films I have yet to see. Here are some films that fit some criterion on a stretch:
>Welcome to the NHK!
Centers on a male NEET, but the other female main character, Misaki, has her own issues. If you want to watch something go for the anime, but I do prefer the original light novel for being on more realistic side. The anime adds more arcs, focuses less on the drug abuse, and has a happier ending. Haven't read the manga yet but people say it stands on its own merits.
>March Comes in Like a Lion (1991)
Not related to the anime. The synopsis may sound like a cheesy romcom but it's actually a psychological, surrealist film. Odd female lead who carries the film with her charm.
>A Bride for Rip Van Winkle (2016)
Loneliness drives most of the characters here. Poetic directing. Great performance from the lead actress.
>Millennium Actress (2001)
The female character's quite normal, but the film's direction is quite introverted and subtle. Themes revolve around the impermanence and searching for one's personal freedom, hence the inclusion on the list.
>Starry Starry Night (2011)Post too long. Click here to view the full text.