Nozoki Ana (ノ・ゾ・キ・ア・ナ) is a Japanese manga series written and illustrated by Honna Wakou about two college students, Tatsuhiko Kido and Emiru Ikuno, who are neighbors in the same apartment complex and are connected by a small "peephole" between their rooms. Nozoki Ana was serialized in Shogakukan's Moba Man mobile phone manga magazine/website from 2009 to 2013, with its chapters collected in thirteen tankōbon volumes.
It was adapted into an original video animation in 2013 and adapted into a live-action film that was released on June 28, 2014. A spin-off manga, Nozo × Kimi, was also released.
Plot
Nozoki Ana follows the life and loves of art student Tatsuhiko Kido. After moving to Tokyo to attend art school, he discovers a hole in the wall of his apartment through which he has a view of the neighboring apartment. When he looks through it he sees his beautiful neighbor, Emiru Ikuno, masturbating. When he goes next door to tell her about the hole, she lets him into the apartment. Unfortunately for him, he trips, falls, and ends up on top of her. Emiru snaps a photo of them in this awkward position and insists that she will only erase the picture if he leaves the hole and allows her to peep on him. But she isn't selfish - he may peep on her too. This begins a life of the two of them "peeping" on each other.
The rest of the story follows Kido through his sexual relationships and his everyday life while he copes with being both peeped on and encouraged to peep on his neighbor. Eventually giving in to temptation, Kido peeps on Emiru witnessing her masturbating and falls into several traps laid by Emiru who records him sucking on her breasts and kissing her. Later in the story Kido, even though Emiru tries to stop him, finds out that his girlfriend, Kotobiki Yuri, is using him to cheat on her other boyfriend who does not care what she does.