My First Day of School

In school, there was a squad named "TWICE" with 9 members. Sana and Tzuyu were best friends, and Sana was also known as the school's richest student.

However, a big secret was revealed about Tzuyu when Sana went to Tzuyu's house.

Tzuyu's Grandma was the one who revealed the secret, and Sana just wouldn't believe it.

But.. what's the secret?

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A/N

This is a SaTzu(Sana & Tzuyu) fanfiction, I just wanted to make it for fun.