"I want to write a diary."
"Huh? Diary?"
Wheein nodded and smiled.
"I'll stop using it after a while."
"How would you know that, sister!"
"That's how everyone is"
"P- It's not me! I'll do it well this time!"
"This time?"
Wheein and Byul were joking around and laughing. After playing for a while, they both seemed tired and sat down on the sofa.
"But Wheein. The diary I mentioned earlier."
Wheein shifted her gaze from the ceiling to the stars.
"say"
"Why are you writing this?"
Wheein seemed slightly surprised by the unexpected question. Then, she smiled and said.
"secret."
Wheein's face was filled with mischief. Seeing Wheein, Byul's face also became filled with mischief. Byul, who had been sprawled on the sofa, rose from her seat and stood before Wheein. Wheein, flustered by Byul's reaction, lost all playfulness in her expression.
"Uh...what's wrong?"
Wheein, her eyes wide, tried to sneak away. Byul, not letting her off the hook, reached out and tickled her. Wheein, who was usually easily tickled, laughed, her whole body curling up in laughter.
"Hey, just stop it."
"I'll stop if you tell me why."
"Haha, okay, I'll tell you."
When Byul told Wheein why she wanted to write a diary, she stopped tickling him.
"Okay. Now tell me."
"No, that's why I want to write a diary."
"Why don't you tell me? I'll tickle you again."
"Ah, just wait a minute."
"Tell me quickly."
"I'm so happy that my sister and I are dating, and the fact that we share our daily lives together like this is so precious, so I want to leave it behind. Even at this moment, time is passing, and the things we were playing around with earlier are now the past. Someday, I'll forget them. So, I'm writing this down in my diary so that when these things fade away, I can remember them again."
Wheein smiled brightly.
"Oh~ Jeong Hwi-in. Do you think about that too?"
"Mr. Woo, don't ignore me."
So the two spent time bickering again.