Yowa Yowa Sensei

Yowa Yowa Sensei follows Akihito Abikura, a 2nd year high school student who is intimidated to discover that he's been assigned to the class of Hiyori Hiwamura, a notoriously scary teacher. However, Akihito soon discovers that Hiyori isn't actually scary, she's just extremely shy.
(Source: Crunchyroll News, edited)