Cheol su

The call

Suddenly my phone ranged. I by mistakenly left it. Taeyon picked it up. And said"hello" .from the other side,"did i called a wrong no.".
"If you have called ji yoon then it's the right no. She has gone out. Btw who are you?"
"I'm yoora her closest childhood friend."
"Ohh I'll tell her once she comes."
And she hunged up the call. Suddenly something stroke her mind and she called her again.
"Hello"
" Yoora, i need your help"
" How can i help you?"
"Can you tell me about Cheol su?"
"Cheol su!"
"Yeah the book Ji yoon wrote, i thought you are her close friend so you might be knowing about it."
"Yes i know and it's too serious. Are you free today?"
"Yes"
"Meet me at xxxx address in the evening "