Majo wa Koi ni hen Shiteru

Ruby is a witch! She came to the human world, longing for a romantic relationship like in TV-dramas, but she cast a spell on a human boy, Chise, to turn him into her servant! Whenever she screams, Chise will come to her rescue, no matter where she is! A magical love comedy that's just too lovely. (Source: Shogakukan, translated)