I dig the idea. Definitely keep working on this.
Pro: I loooove the melody. I'm vibing on the melody haha. The snares/claps sound good to me.
Cons(subjective, of course): Since there are no vocals... either do as everyone mentioned and add some vocals or add more instrumentation. It feels a bit toooo minimal to me. As far as structure... if you're going for more of a marketable hip hop beat, then set up a proper verse/chorus, etc. Otherwise, I'm a fan of weird track structure (a la Four Tet).
I don't like the sound of the kick (I feel more of a subdued kick would sound nice) or the "**** shit up" vocal.
Maybe find more Japanese oriented samples (like Japanese drums or cool percussive instruments)
Adding another melody to pair nicely with the one you already have?
Let it be noted that I'm not terribly experienced in judging mixes so I'm doing my best wif mah ears
Here is the one thing I have up. Recently heard it on a proper subwoofer; I only have a monitor pair. I feel the bassline is too loud in the mix. But perhaps the subwoofer I heard was badly calibrated. It was a middle-end home theater system with a large sub.