Hahaha, so the "certain win strategy" was martingale. Come on, author. XD
As for BK's plan, I just hope it's not about considering that the banker will always copy Tobita's first direction. We already saw Tobita choosing to duel, so unless the banker is really stupid (not impossible, sadly), he would not copy him every single time. There should be more to it. Maybe an agreement of some sort with the banker himself, as someone suggested...
Hyped to discover this new batch. Thank you Team Duwang, as always.