Ni-ki is your one and only brother. You loves him so much eventho he is stubborn, annoying and always teases you, but he always obey to your orders. He loves to spoil you.

Lately, you noticed that he is different now.. He goes out every night with his friends, didn't obey your order, rarely talk to you and completely a changed now.. It hurts you so much seeing your beloved brother changed.

One night, you were in the living room, watching K-Drama on the TV. You noticed Ni-ki is grabbing his things to go out again with his friends in this middle of the night. What would you do?