BEST ~first things~ debuted at #2 in its first week behind Mr. Children and sold 558,916 in the first week. It climbed up to #1 position in the second week and also took the #1 position for Oricon monthly album chart. It was Koda's first album to have the #1 spot and also her first to sell more than 1,000,000 copies. It took the #17 position in the yearly charts. BEST ~first things~ is certified 2xMillion by RIAJ for shipment of 2,000,000 copies.