Fuufu Ijou, Koibito Miman.

夫婦以上、恋人未満。 • More Than a Married Couple, but Not Lovers • Publishing

Synopsis

Jirou, a third-year in high school, is forced to live with a gal 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...!? (Source: MangaDex)

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