Not in Textbooks

教科書にないッ！

Also known as Very Private Lesson, Kyôkasho ni nai!, Kyoukasho ni Nai!

The romantic comedy and drama follows the manga of the same name and follows the adventures of cute and coquettish schoolgirl Shirabaka Aya and nerd of a man Tairaku Arihiko. There is a problem or two. Aya loves Arihiko. Arihiko is a school teacher. Aya is a student at the school. Aya's father is a yakuza thug. Aya and Arihiko live in the same apartment. Aya is hot. Arihiko could lose his job.