Yowa Yowa Sensei is a Manga/Manhwa/Manhua in (English/Raw) language, SUGGESTIVE series, english chapters have been translated and you can read them here. You are reading chapters on ManhwaZ fastest updating comic site. The Summary is
It's the start of a new school year. The new homeroom teacher for Abikura-kun, a second-year high school boy, is Hiyori Uwamura, who is known as a "Scary Teacher", rumored to curse you if she gets offended! One day after school, Abikura-kun witnessed the other side of "YowaYowa-sensei"... and he is shocked by the gap between reputation and reality! The opening of a romantic comedy that will stir up your protective instincts!!