Kamui showed up for the training, all right: he's genuinely intrigued by the strategic nature of the cheating and paid close attention. He's got the advantage of not looking like much at first glance as well as having a solid poker face... but he's also dipping for bodyguard duty as soon as he gets either a string of successes or failures. He's just so-so with people and doesn't wanna push his luck too far.