Yuna admits: "Haruki, I don't remember that night clearly. But Kaito... he's back in town. He wants to 'apologize properly.'" Haruki wants to go with her. Yuna refuses. "If I'm ever going to heal, I have to face him alone." Reluctantly, Haruki agrees. But he follows at a distance.

But Kaito isn't gloating. He looks exhausted. "You idiot," Kaito says. "I didn't show her that phone to destroy you. I showed it to her because I planted those messages two years ago. I wrote them. I made her think she sent them. Her memory of that night is foggy because I drugged her drink. She never betrayed you. I just wanted to see if even you, 'Mr. I Believe in Her,' would break."

Now, Haruki and Yuna live together. They cook meals, watch movies, and laugh. But Haruki notices small things: Yuna flinches when her phone buzzes at night. She sometimes stares blankly at her reflection in a dark window. When he asks, she smiles and says, "I'm just tired."

But then he remembers: Belief isn't about certainty. It's a choice.

Belief is not the absence of doubt. It is the courage to love despite it. This story retains the emotional weight of the original concept while adding a mature, grounded conflict about memory, manipulation, and the daily labor of trust.