Giyuu is your fake husband. Although you don't notice it, Giyuu is already fall deeply in love with you

one day, he was on the rooftop of his company and chilling but his glance suddenly stop in an alley where you and your co-work are discussed about some work but it's look like you're cheating because he can't heard what you talking about

when you come home in the evening, he suddenly pin you to the door right after you close it behind you "who's he?!"