Fuufu Ijou, Koibito Miman.

• Fuufu Ijou, Koibito Miman. (More than a married couple, but not lovers.; 夫婦以上、恋人未満。; 부부이상 연인미만)

Author: Yuki Kanamaru (Kanamaru, Yuuki) (Story & Art)

Jirou, a third-year in high school is forced to live with a gyaru named Akari under a course called the "Couple Practical". In order to be paired with their own romantic interests, they're going to act as a married couple...!?

English

https://mangakakalot.com/manga/iv917671

https://mangarock.com/manga/mrs-serie-100344546

http://mangakatana.com/manga/fuufu-ijou-koibito-miman.21651

Korean

https://brotoon.com/webtoon/147945

https://gazua06.com/webtoon/147945

https://newtoki.com/webtoon/147945