Not actually sisters.
Why can she only be my older sister? An Yu couldn't figure it out.
The first time she met Song Yi, everyone told her to call her Sister. Young and confused, yet secretly thrilled, she timidly called her that.
In the crowd, Song Yi was about the same age, but carried herself with confidence and maturity. She bent down, tapped An Yu on the nose, and said, "Hello, little sister."
Song Yi often told An Yu, "You'll always be the person I love most."
An Yu would ask, confused, "Why?"
Song Yi would close her diary and say, "Because you're my little sister."
As time passed, the two drifted further apart, almost losing touch.
Then a winter break brought them close again.
But they parted once more after An Yu said, "I want to start dating."
Teacher Song was always busy. Busy teaching, busy after class, and even busy after work, with no time to go out for a meal with her colleagues.
When people asked, she said she was busy renovating her home, getting it ready for her beloved to move in.
Everyone said the young couple must be very much in love.
But the renovation dragged on for years, and Teacher Song never brought it up again.
Then one day, someone came to pick her up after work. The person looked young and rode a little electric scooter. The two of them looked awkward sitting on it together, yet Teacher Song was beaming with happiness.
Wait, Teacher Song, what happened to your car?
Teacher Song shook her head regretfully. "Sold it. I gave all the money to my little sister."
Little sister? Everyone exchanged looks. They didn't seem like sisters...
After An Yu successfully moved into her sister's home, Song Yi told her not to go into the locked room.
Why? Since Song Yi wouldn't let her, An Yu only wanted to know more. Driven by curiosity, click...
The door opened. Once Pandora's box was open, there was no going back.
She looked up, and the walls were densely covered in photos of herself...
Reading guide:
1. An all-female world.
2. A blended family, with no blood relation.
Core theme: Can't think of one yet.