Jake Sim/Sim Jaeyun got arranged marriage with the mafia boss Lee Heeseung and he thought that Heeseung never loved him

Jake has always had a crush on his best friend Heeseung, who he was so certain returned his feelings - at least until the day Heeseung confesses that the person he likes is not Jake but Sooha, the third member of their trio friend group.

Heeseung is the calm, reserved guy in the friend group-the one who observes more than he speaks and always knows the perfect savage line to drop at the right moment. He's best friends with Jay, the outgoing fashion enthusiast who somehow connects everyone in their tight-knit group. Though Heeseung gets along with everyone, he tends to hang back, letting the others take the spotlight. Jake, on the other hand, is like a burst of energy. Cute, bubbly, and always laughing, he's the one who livens up every conversation and makes sure no one feels left out. While he's not as close to Heeseung as he is to Jay, they often end up in the same spaces, thanks to their shared group of friends. Jake's cheerful personality is a stark contrast to Heeseung's quiet, composed vibe, but that doesn't stop Jake from being his usual friendly self around him.