Kyungsoo was a happy, energic and friendly person, who smiled everyday and when was hurt, he always told everything to his friends and cried to relieve himself, but at the end of eigth grade, he changed completly, he pushed everyone away, he never smiled again, he never cried again, he became a reserved person, even if his friends try to help, is no use, he's not opening anymore, that is before another kid came in, will he be able to help? Or will he fail as well?