Summoning a small, shrunken succubus servant

"My, my Koa, I didn't expect to summon you so tiny and adorable, I could get very used to this~.."  Patchouli spoke with a smug grin on her face, delighting in her accidental shrinking spell, whilst attempting to summon Koakuma to her desk with magic. Koa could only look up and gaze at her massive, overpowering librarian mistress, giving a cute smile as she was blissfully unaware that she was about to be summoned again much smaller for the experiments~

An image request from TheSWKing  who wanted a tiny Koakuma before her master. (along with my first attempt at giving an upload a proper description in ages)