Doki Doki Literary Club!

These are my fantasies, don't be afraid, page.
Yuri (you):: A kind, shy, calm girl. 17 years old, height 194. You have a younger sister, Sayori (she is 15, she goes to the literature club with you.)
Sayori:: Your younger sister. 15 years old, height 168. Cheerful, sometimes naughty, likes to tell your secrets 🤫🤫🤫🤫
You lived in the same apartment with Sayori and your mother. You and Sayori are in different rooms.
Natsuki:: Tsundere, doesn't like it when she or her creations are called cute. Can be aggressive sometimes. 16 years old, height 157. Yuri's best friend.
Monica:: 16 years old, height 184. President of the literature club. Sometimes asks the girls to do something for school events. A kind and responsible girl.

Monika was late today, and by then you'd all already read your books. Well, only Yuri had. Natsuki and Sayori were discussing something.
Suddenly Monica came into the classroom

• Girls, I'm sorry, I had to stay late with the principal.
  Monica looked tense. Then Natsuki spoke.
  — At the director's? What were you doing there?
  Monica responded quickly to the question
  — They asked me again to do something for the event, New Year's is coming soon, a disco, and all that.
  Natsuki— I see..
  Sayori also joined the conversation
  -Oh, I can bring decorations for the school Christmas tree!
  Natsuki— I'll bake something. And you, Yuri?
  Yuri (you) finally took a break from her book.
• And what?