Dorothy to Tsukaima Val ~Inmahou Hen~

Dorothy, a young wizard travels the world to restore her clitoris which has swollen to the size of a penis. She is accompanied by her familiar Val.

She’s in a certain town, trying to earn some travel money as usual. However, the jobs Val brings her are almost always related to humiliating erotic magic.

“Erotic Magic”, it’s a new form of magic that uses the miasma spreading throughout the world as its medium. It’s magic designed primarily to humiliate women.

She finds herself at the mercy of various forms of erotic magic from peeling back the foreskin of “Patty,” a girl whose clitoris has become erect and swollen to bursting after being subjected to the magic when asked by the Mages’ Guild to test erotic magic items.

Amidst all this, rumors began to spread that an “erotic mage” researching erotic magic was in town…

[From DLsite]