Who is the slave?

The boy is surprised and says "What's that?" The black smoke covers the room. And then a gin appears and says "I am your slave because I am free thank tou you. What can I do for you?" The boy is surprised and afraid too. He can not say anything at first. And then he says something in a low voice after a time. Gin can not hear the boy's voice. The boy understands that and shouts in a loud voice this time. He says "IN MARK HALK, IN MARK HALK, IN MARK HALK..." again and again. He thinks "If I say the words, gin can go back to the box." But gin is still in the room with the black smokes, doesn't go back to the box. Gin says "Please, don't afraid. I don't hurt you. I am a good gin. I help the people. I can help you too. What can I do for you? Say me!" The boy opens his eyes in a daze and thinks "Yes! The gin can be good. I can say him my illness. I need help. If you say you are my slave you can help me but I don't think you are my slave. You can be my friend and help me. Don't you?" The gin smiles and goes back to the box. The boy is surprised again and begins to cry. He says "The gin is not a good gin. Gins can not be good. I am cheated. He is not my slave not my friend. He is nothing for me." and continues to cry. He cries and cries and sleeps. After a while he suddenly wakes up and sees the gin at the bedside. The gin says to the boy "Drink the elixir dear!" The boy smiles and drinks the elixir and gets better! He says to the gin "I am sorry. You are a good gin and my friend. You are not my slave. I am your slave. I feel better thank to you. What can I do for you?" The gin smiles and repeats "I am a good gin. I help the people. I like the kind boys. I like you too! Be a good person. Have a good personality. You can do it for me! Do it nice boy!. and go out from the window.