Oto's made the decision to quit Eitoku Academy now that her secret's been revealed. Or rather, the decision was made for her! As a commoner, it's just a matter of time before she's shown the door. And since she'll no longer be a student at Eitoku, this means that her engagement to Tenma won't be valid!
— Description from Comic Vine community (comicvine.gamespot.com).
