Here's another promotional video from Comic Market 72 for
Koharu Biyori:
http://www.youtube.com/watch?v=-it7l5Fs_0I
And another promotional video from Comic Market 72 for
Bokusatsu Tenshi Dokuro-chan 2:
http://www.youtube.com/watch?v=3LOEm8FRUac
And more from Comic Market 72:
Shakugan no SHANA II
http://www.youtube.com/watch?v=lx3bQBuvOfc