So... is Nozoki Ana finished or not?
NO, it is not finished.
Why?
The anime finished after the manga:
Anime finished: February 28, 2013
Manga finished: February 01, 2013
... But MangaUpdates contains information about the anime adaptation and indicates that it is incomplete.
Watching Order (by release date)
Here you have all the anime relations we detected ordered by release date, so you can see the reason for this status in context and also use it as watching order.
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Synopsis
Tatsuhiko Kido, a new art student, finds himself in an incredibly awkward situation when he discovers a hole in his apartment wall that lets him see into his neighbor's room.
What starts as a misunderstanding quickly escalates into a complicated and potentially erotic relationship with his neighbor, Emiru.
Emiru, who also attends the same art school as Tatsuhiko, uses the initial incident to her advantage, leading to an unusual and boundary-pushing friendship between the two.
The story explores their dynamic as they navigate the complexities of their situation and deal with the repercussions of their unconventional connection.