...I Ate the Whole Thing

 is the 84th chapter of the manga it is also the fourth and final chapter of the Akane vs Kodachi - Cookie Battle Arc.

Akane gets trapped in a large vice that springs from the floor in the Kuno home, and Kodachi tells Ranma that to free her he'll have to find the key she dropped in the dinner she made for him.

Cast in Order of Appearance

 * Ranma Saotome (female)
 * Tatewaki Kuno
 * Ranma Saotome (male)
 * Kodachi Kuno
 * Akane Tendo
 * Kasumi Tendo
 * Genma Saotome (human)