Give my hair back!

This story is about one of my friends' story. Her name is JiKyung. When we were in highschool, our teachers didn't allow us to have long hair. So, we had to have short hair. Because of it, some of my friends got their hair permed. One day, a teacher who controlled our hair and costumes (uniforms) told us she would check our hair the following week. so we had to make our hair straight but we were students so we didn't have enough money to go to hair salon. Fortunately, in front of my school, there was a shop which sold some stuff for hair. We went there and bought chemical to make our hair straight.
We escaped from physical class and went to the place where our school orchestra practiced because the members of orchestra didn't practice until class was over. One of my classmates was a leader of orchestra so she had a key of that room. We went there and my friend, JiKyung, wanted to do it first. So at first my friend, HM, put the first step chemical on JK's hair. We had to wait 30 minutes but our teacher found us so we had to leave JK there alone.
Unfortunately, that class was too boring that we fell asleep instead of taking care of JK's hair. Worst of all, we were afraid that a music teacher came to the room where Jk was so we locked the door outside. She couldn't come out of that room without us. Also, we got a deep sleep so we didn't answer the phone calls from JK. One hour later, we got up and went to food court and we felt something was missing.
OMG!! We forgot JK! We ran to the place and we found that JK was irritated. We washed her hair, put second chemical on her hair and then we washed her hair again.

TADA! Because of chemical and us, JK's hair started pulling off. She lost a lot of hair which were near her forehead. She went to class and she didn't talk with us for 1 week. We said sorry and sorry a lot of times but we couldn't give her hair back. Whenever we talked about JK's story, we laughed and felt sorry to her. Sorry JK!!