Myo-chan Sensei wa Kaku Katariki  

みょーちゃん先生はかく語りき

Sasabune Miyoka is a skilled counselor who helps students with their daily problems and concerns. She works in a high school setting where she deals with adolescent students going through puberty. The story follows the life of a young woman during her adolescent years. As for your question about blue-collar affairs, Miyou-chan Sensei is likely prepared to handle any red-faced inquiries that may come her way, including those about which panties her boyfriend prefers.