CFO Code Redemption Campaign
Bushiroad, in light of the Serial Codes for Cardfight!! Online being as valid as funny money, is offering a means of compensation for players.
Until the end of 2017, Bushiroad at BCS2017 events is allowing players to turn in their Serial Code for CFO to get “Interdimensional Dragon, Lost Age Dragon” to get a Special Critical Trigger Pack (which contains a Critical Trigger).
