After a few days, Chaeyoung and Tzuyu are eating in the cafeteria. She can see Sana laughing with her friends on the table next to them.

I really don't know what's on her mind. Sometimes, she is serious and a bit scary, she would talk to me when we're alone but when we are in public Sana's acting that we don't know each other and now she is laughing carefree which usually isn't happening. I wonder what happened to her all these years, she was not like this before. When we were younger, she loves interacting with a lot of people but now she's only around her group of friends, she loved smiling all the time unlike now she does it rarely. Before, she makes people feel that they are important to her but it's not the same anymore just look at her boyfriend who's always not around her and before Taehyung Sana's always around guys and girls, she loves to flirt. Sana did change a lot when they moved away. When her family's back after 3 years, I found out that we are neighbors again after a week and it was really unbelievable.

I myself doesn't know what we have now. I'm confused why she's acting weirdly. The only thing that I'm sure about is I'm happy and I love it when she acts differently with me. I promise that I'll figure out what's really going on, I'll solve her puzzle.

Someone is waving a fork in front of her face. "Tzuyu yah.." Tzuyu blinks a couple of time then realized that Chaeyoung has been talking to her, interrupting her in her thoughts.

"I'm sorry. Why?"

"What are you daydreaming about this time? Don't tell me it's about her again." Chaeyoung said.

"It's not about her. I was just thinking of going on a vacation to clear my mind." She lied.

"Tzuyu yah, instead of your Sana why not look at Mina unnie? She's totally admirable."

Tzuyu looks at Mina smiling with her fr