After gathering 10,000 fans to commemorate the release of their Japanese debut single, "BTD", the boys of INFINITE have more reasons to celebrate as "BTD" debuted at number 2 on the Oricon Daily Chart. "BTD" sold a total of 15,281 units on the first day which was just behind Not Yet and their single "PERA PERA PERAO". Congratulations to INFINITE on this achievement. Source: Oricon [Thanks to everyone who sent this in.]