Shin Hanayome wa Juunanasai

Due to her mother's outrageous desire for a daughter, Sakurako lives as a woman even though she is a man. On top of that, Sakurako is married to Kazuhiko, a popular mystery writer, so the high school boy is also a married woman. The two of them have been living a sweet married life, overcoming various obstacles, but when Kazuhiko comes to Sakurako's all-girls school as a new teacher, Sakurako's life becomes even more complicated! A rival classmate tries to seduce Kazuhiko, and Kazuhiko wants to have sex with Sakurako on campus. How will she get out of this mess?

(Source: Aqua, translated)