Chiaki's said her piece, and Kalki remains just as set in her response as ever. There's no way either of them are going to change each others' minds - they're just too different. Now, as Nagito would say, it's time to see whose hope is stronger. And since there's nothing left that can be accomplished with words alone, Chiaki's going to try a different strategy. Activating Shunshin and Stealth simultaneously, she melts into the shadows among the crowd of Heroes and begins slowly and carefully making her way toward Kalki. If this takes a few turns, so be it, but her aim is to get that Black Crystal away from her. It's featured prominently in every attack she's used so far, so Chiaki reasons it must be the source of her overwhelming power.