Kojinsa Arimasu

Isomori Akira and Sonoko have been married for five years and currently lead a somewhat cold married life. One day, a near-death experience causes Akira's body to change into a woman while his mind remains as a man. Due to this, Akira has to learn everything about woman and finds out the hardships and difficulties of living as a woman. Akira's wife, Sonoko, was surprised to learn about her husband's issue but has no intention of divorcing him. She decides to get through the difficult time together and teaches Akira everything so that he can live as a woman. Sonoko notices that she has been talking a lot more with Akira and once again realizes the importance of her husband in her life. However, both Akira and Sonoko begin to realize that Akira is becoming more and more like a woman on the inside. This causes Akira to be confused as to whether he is a man or a woman. Sonoko too, wonders if she can still love Akira as a woman and whether they can live together as women for the rest of their lives. (Source: DramaWiki)