User blog comment:Hitsuji Mamoru/Servant Creation Room 2 : Guess of the Who/@comment-4802891-20170402200215/@comment-4802891-20170414042945

Allure affects female characters, giving them a blue Clock icon under their lifebar. At the end of the turn, after all the enemies have attacked, the status effect activates and charms all male enemies around the girl afflicted with Allure.

The Charm itself cannot fail (except on King Hassan of course).