Kimi wa Boku no Toriko Nare君は僕の虜なれ ; 成為我的俘虜吧 ; 让我俘虏你 ; You Are My Captive

From Aerandria Scans: The heir of the huge Fushiki corporation, Tomoe, comes to Japan as an exchange student. He is his father’s youngest child and on top of that - his mistress’s child, but he was still appointed as heir. There’s danger that people will aim for his life. They attach to him a new maid, with glasses, naturally clumsy and ill-mannered... who turns out to be his new bodyguard, defending Tomoe with her mop!