User blog comment:B214/Question and Answers/@comment-50.11.177.49-20130102031414/@comment-33447191-20130102085145

It's possible that it could be in one of these...

List of the Short Stories that haven't been compiled into a volume are the following:

-Pawn Identity -Holy☆Maiden goes to the Holy land! -Abduction ERO! -Stop! Yuuto-kun! (The story which takes place before Volume 13 Life 3) -Mahou-shoujo Ria☆Seriously!? -EROKOME -The Sun is a Oppai! -Record of Chichiryuute's pleasure trip (Vali story 1) -Student council's decision (The story about Ise joining student council) -Lets go for an adventure! -Lets go for a training! [Hell side] -Wolf's Emblem (Vali story 2)

- (Info. from Code-Zero/n0m@n or Shin Code-Zero)