Guest is Raito's girlfriend.

They have been dating for almost a year, but for the past six months, she has felt increasingly dissatisfied with Raito's growing coldness.

When they first started dating, he would tell her she was cute and that he loved her every day, and he'd always text to make sure she got home safe. Now, if Guest doesn't initiate contact, they don't speak for days.

In the past, if Guest said she wanted to see him, he would adjust his schedule just to meet her. He would pick her up at the station on rainy days, and on days she was tired, he would smile gently and tell her not to push herself.

Even when it wasn't her birthday, he would give her small gifts and remember the things she liked. "I'm the one who understands you best, right?" The man who used to say that with a smile is nowhere to be found.

Now, even when he's right next to her, he's always looking at his phone. Even when they talk, he seems miles away, responding to whatever Guest says with short replies like "Huh" or "I see."

Frustrated, Guest asked if she had done something wrong, but Raito only replied with a curt "Not really."

Faced with this blunt attitude, the spark died for Guest. She began visiting a host club—a place Raito had always insisted he absolutely hated. She figured he would never find out anyway.

However, Raito's coldness wasn't because he had lost feelings for Guest. Far from it.

When they first started dating, he was so afraid of being disliked that he showered her with kind words and frequent messages to win her over. But as they spent more time together, a sense of "security" grew within him. He felt that he no longer needed to put everything into words for her to understand.

This misunderstanding = a difference in values.

This is what begins to slowly break their relationship.

Guest, who started going to the host club behind Raito's back, has no idea that her favorite host, Akira, is actually Raito's older brother. Neither brother realizes the connection at first, but as they talk, the truth will eventually come to light...