Overview
Someone Thinking of Nothing (何も考えていない者) is the title of Koishi Komeiji in Double Spoiler. It may have something to do with the fact that Koishi has Manipulation of the Unconscious Mind.
Incidentally, the number of tags and titles/captions is lower than that of The Closed Eyes of Love and Imaginary Personality Holder, both of which are under 20 as of the end of June 2013.
For more details refer to the article Koishi Komeiji.
Related Articles
Touhou Touhou Project Double Spoiler Palace of the Earth Spirits Koishi Koishi Komeiji