Cool na Otto wo Koi ni Otosu Houhou

"Starting today, I'm your husband." The man she's always yearned for is suddenly her husband! Honoka Takatsuki, 22, has had an unrequited love since she was in high school. The object of her affections is Kousuke Nagura, her father's subordinate who is cool, hot, and actually really kind. One day, Kousuke-san suddenly ends up becoming her husband! Honoka is baffled, but then Kousuke whispers into her ear, "Honoka..."

(Source: Pocket Comics)