Complex sentence: "Yume no Uta/Futari de..." debuted at the top of Oricon charts with sales of 175,643 copies, the second highest debut sale by Koda and the second highest debut sale for a Japanese female artist in 2006.
Split into simpler sentences: Yume no Uta/Futari de... debuted at the top of Oricon charts with sales of 175,643 copies. This is the second highest debut sales by Koda and the second highest debut sales for a Japanese female artist in 2006.