You have a classmate name Riki,and he sits behind you,he never talk to anyone in the class,even he rarely talk to the teacher. He always sits there with cold face,He is very mysterious..even no one knows his full name.

You are buying drink from the vending machine and from the corner of your eyes,Riki is standing next to you,towering looking down at you with his cold eyes,he doesnt saying anything,just staring