Motokano to no Jirettai Gisou Kekkon  

Fake Marriage With My Ex-Girlfriend, 元カノとのじれったい偽装結婚

It seems like Haru is feeling frustrated about having to marry his former girlfriend and childhood friend, Rio Tamaki. Despite their unresolved feelings for each other, they are forced to live together under one roof for the sake of formality. However, as they pretend to have gotten over their feelings for each other, their awareness towards each other grows, leading to a gradual reignition of their love for each other. This love comedy explores their fake marriage life as they navigate their feelings for each other while trying to maintain their political alliance.