"People thinks it's easy when it's not."  

Part I: My Child Ten months after Jung Joonyoung moves back to Korea without his parents, he wakes up to find five-year-old Roy Kim and his fat dog Sangcho at his doorstep. With no one else to take care of Roy, Joonyoung must take respons

Jung Joonyoung and Roy Kim had been became friend for one year, however Joonyoung felt that Roy should've trust his friend to share his problem.