User blog comment:IamJakuhoRaikoben/Chapter 431 & 432: My sword is... & Brair in Love, Review./@comment-7418318-20150428215301/@comment-7418318-20150429071810

Sure glasses don't matter, but her face, her hair, her behaviour are all more akin to Karin than Sakura.

The author went really over the top if this ends up as only a red herring.