Nande Koko ni Sensei ga!?

is a Japanese manga series by Soborou. It has been serialized in Kodansha's seinen manga magazine Weekly Young Magazine since 2016, and has been collected in six tankōbon volumes. An anime series adaptation by tear-studio premiered on April 8, 2019.

Plot
The story featuring different pairs of female teacher and their male student as their "illicit relationship" always ended up in awkward, embarrassing situations.

Official

 * Official Website

Other Sources

 * Wikipedia