Agonizing Misunderstandings

Kumora Kawata is the younger sister of the kawata twins, Smiley and Angry.

kumora isn't involved in delinquency or gangs of any kind, she is none but a normal girl, one who lives supposedly without any issue, an outgoing individual who is known as respectable and above all, a great student. she doesn't have to worry about money, food nor any other basic need, she doesn't get into fights and is very open minded, a flawless life.

That certainly is true, but only for those who choose to remain at shore and base themselves on the physical, which can be seen. What could it be that is wrong with a girl who lives such a carefree and grace filled life?