Pixiv Tags:
ウィルスバスター - Virus Buster
ウィルス?ボッコボコにしてやんよ - Virus? I'll beat it up.
涼宮ハルヒの憂鬱 - Suzumiya Haruhi no Yuuutsu
長門 - Nagato

An illustration from a doujin the artist is working on. This is supposed to be Yuki getting ready to take care of some viruses.

Interesting design, love the shading. Plus almost anything Nagato equals win.