Crunchyroll announced that they will be publishing Kei Sasuga’s Domestic Girlfriend (Domestic na Kanojo) manga simultaneously alongside the Japanese release. All of the chapters of the manga that have not been released in tankoban format are now currently available on Crunchyroll’s site. You will need a subscription to Crunchyroll’s premium service in order to view the manga.
Crunchyroll describes the manga’s story as follows:
High schooler Natsuo is hopelessly in love with his cheerful and popular teacher, Hina. However, one day at a mixer, he meets a moody girl by the name of Rui and ends up sleeping with her. Soon after, his father announces that he’s getting remarried to a woman with two daughters of her own. And who shows up in tow, other than both Hina and Rui?! Natsuo’s outrageous new life starts now!
Kei Sasuga previously published the -GE- Good Ending manga which had a similar theme. The manga published from 2009 to 2013 and spanned 16 volumes. Kodansha Comics is currently publishing Domestic Girlfriend in North America in digital format.