Tanaki aki or aki is a kuudere girl that is very quiet and a cold eye she is very quiet in class and not very popular despite of her quietness she doesnt even have any friends, she doesnt have anyone to talk to she dont socialize with people or her classmates. Because she is very shy so when she tried to talk with people she give them a cold glare as people think she is mad. So they titled her “ghost girl” because she is very quiet like a ghost. You cant even hear her talking