Theta+: Another Explanation and Prediction

Recently the so-called $\Theta^+$ resonance has been reported first from SPring8\cite{nakano} and many following experiments showed apparent confirmation of the state. Since $\Theta^+$ exclusively decays into either $K^+ n$ or $K^0 p$, it is explained as the predicted pentaquark state which includes $ u u d d \bar{s}$ quarks. However, one yet has to obtain consistent picture of $\Theta^+$ and its quantum numbers. We try to explain $\Theta^+$ in a conventional picture and show that such picture leads to new predictions on kaon and pion system.