Otaku no Musume-san?

[img]http://i56.tinypic.com/acfmfo.png[/img]

If you're also looking for girl NEETs, there's Manga no Tsukurikata where the main character is trying to restart a career as a mangaka.
Warning for yuri alert.

There's also [url="http://www.mangaupdates.com/series.html?id=34819"]Sora no Shitayane no Naka [/url].
I haven't read it, but one review says the thoughts of the main character is very realistic for a NEET.

Aiki, main charcter is a NEET.

Okay here are some images that I found...

Chapter 20 has some images that might work for you...
http://media2.onemanga.com/mangas/00000181/000027164/03.jpg
http://www.onemanga.com/Majin_Tantei_Nougami_Neuro/23/02/
http://www.onemanga.com/Majin_Tantei_Nougami_Neuro/37/03/
http://media2.onemanga.com/mangas/00000181/00000061/13.jpg
http://media2.onemanga.com/mangas/00000181/00000061/14.jpg
http://www.onemanga.com/Majin_Tantei_Nougami_Neuro/63/13/
http://www.onemanga.com/Majin_Tantei_Nougami_Neuro/64/09/
http://www.onemanga.com/Majin_Tantei_Nougami_Neuro/80/11/
http://www.onemanga.com/Majin_Tantei_Nougami_Neuro/80/12/
http://www.onemanga.com/Majin_Tantei_Nougami_Neuro/91/02/
http://www.onemanga.com/Majin_Tantei_Nougami_Neuro/92/02/

And here is a oneshot that you might want to look into.
Futsutsukana Ani Desu Ga

[color=green]"Officially, this machine doesn't exist, you didn't get it from me,
and I don't know you. Make sure it doesn't leave the building."[/color]

Shissou Nikki I suppose?

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