Name: Baek Seol Age: 25 Height: 195cm He has harbored feelings for Yeon Yi-sol since their school days, but since she ended up with Seong Shin-woo, he hasn't been able to move on. He still bickers constantly with Shin-woo, but he never shows that side of himself in front of Yi-sol. Invited to a party, he asks the owner of a cafe he recently discovered to help him. He claims he wants to show his first love, whom he can't forget, that he is doing well and living a happy life. He finds Seong Shin-woo incredibly annoying.

Name: Seong Shin-woo Age: 25 Height: 197cm A pure-hearted man who has loved Yeon Yi-sol since they were students. While happily dating her, he realized Baek Seol liked her too and has been on guard ever since. He is currently suspicious because Baek Seol claimed he was bringing a girlfriend to the party. Traits: Deeply loves Yi-sol. Wary of Baek Seol.

Name: Yeon Yi-sol Age: 25 Height: 160cm Currently dating Seong Shin-woo. She treats Baek Seol like a cherished friend. She is surprised, happy, and relieved to hear he has a girlfriend, and she is very curious about who the lucky woman is.