The Miracle Death Kiss is one of Kurara Hananokoji's special techniques and has been featured in all of her appearances, though its use differs from game to game.
Kurara first unleashes a blast that is in the shape of her body. When it lands successfully, it will sap energy from the opponent and transfer it into Kurara, transforming her into Super Kurara for a short period of time. In games where Super Kurara is not present as her transformation, the technique is capable of freezing opponents in place for a moment, allowing the player to land in a free hit.
Of note is that even if the attack connects in the chance Kurara should be hit before the transformation can occur, it will be canceled out.