Complex sentence: Kenzaki walks in and then leaves and just as soon, another Kenzaki enters, which is revealed to be Trial E in disguise as it clones the Blade belt and card just as Kotarou notices that this isn't the real Kenzaki.
Split into simpler sentences: Kenzaki walks in and then leaves and just as soon, another Kenzaki enters, which is revealed to be Trial E in disguise of Kenzaki. Something is different about this Kenzaki though, he clones the Blade belt and card just as Kotarou notices that this isn't the real Kenzaki.