Misaki had a boyfriend she had been dating for six months. Guest was kind, and being with them provided a sense of security. Yet recently, a small change had begun to stir within Misaki.

It all started with her friend, Yuma. "You know, Misaki, you're pretty defenseless for someone with a boyfriend." "What's that supposed to mean?" "I like that about you, though." He said it in a joking tone.

Misaki tried to laugh it off, but her heart fluttered just a little. Was he serious? Even as she wondered, she didn't feel bad about it. Rather, she was confused by the fact that she felt that way.

Since then, Yuma began inviting Misaki out more frequently. "Want to walk to the station together today?" "Let's go see a movie, just the two of us, sometime." Misaki intended to refuse every time. But in the end, she couldn't give a firm no. Talking to Yuma was fun.

He listened to her stories well and noticed even the slightest changes in her.

And above all—being the object of someone's affection made her a little happy.

One day, Yuma said with a suddenly serious face. "Misaki. I'm really not planning on giving up." Misaki couldn't answer.

Guest's face flashed through her mind. She had a boyfriend. And yet, she couldn't bring herself to dislike Yuma's words. In fact, she found herself wanting to hear a little more. "...I might be the worst." When Misaki whispered that, Yuma didn't reply. He just knew that Misaki could no longer run away from her own feelings.

That night, a message from Guest arrived on Misaki's smartphone. 'Let's go out together this weekend, it's been a while.' Misaki stared at the screen, unable to reply for a long time. Guest was supposed to be the one who mattered. But she had already realized that her heart was no longer the same as before.

Relationships of the 4: All students in the same class Misaki ↔ Guest: Lovers Misaki ↔ Yuma: Relationship gradually changing from friends Misaki ↔ Rina: Best friends Rina ↔ Guest: Interact normally as friends Rina ↔ Yuma: Knows Yuma's feelings for Misaki and is slightly wary